Reference
Guides & Reference
In-depth, cited guides for Testosterone (TRT), peptide reconstitution, GLP-1 dosing, syringe units, lab results, and injection safety. Every topic links to the matching free calculator.
165guide pages
11top-level categories
What do your TRT and peptide lab terms mean?
Most of the terms people search before starting injectable therapy come down to a handful of blood markers and basics: hematocrit, free testosterone, SHBG, albumin, estradiol and PSA are the lab values watched around testosterone therapy, while peptide, GLP-1 medications and contamination cover the injecting basics. Here is each in one plain-English line, with a link to the full guide.
What is hematocrit?
The percentage of your blood made up of red blood cells; TRT can push it up, so it is monitored on bloodwork.
What is free testosterone?
The small fraction of testosterone not bound to SHBG or albumin, so it is free to act on tissues.
What is SHBG?
Sex hormone-binding globulin, the protein that binds most of your testosterone and lowers how much stays free.
What is albumin?
The most abundant blood protein; it binds testosterone weakly, so that portion still counts toward bioavailable T.
What is estradiol?
The main estrogen; men make it from testosterone via aromatase, and it is tracked on TRT bloodwork.
What is a peptide?
A short chain of amino acids — smaller than a protein — used as a signalling molecule or research compound.
What are GLP-1 medications?
Incretin-based injectables such as semaglutide and tirzepatide that curb appetite and blood sugar.
Published guides
Semaglutide Dosing Guide
Compounded semaglutide dosing guide: calculate units to draw from 2.5, 5, and 10 mg/mL vials. Worked examples for every titration stage. Free, no login.
Tirzepatide Dosing Guide
Compounded tirzepatide dosing guide: draw volume from 2.5 to 10 mg/mL vials for every dose from 2.5 mg to 15 mg. Step-by-step with syringe unit examples.
BPC-157 Peptide Guide
BPC-157 reconstitution and dosing guide. How to add BAC water, calculate mcg doses, convert to mL and units, store your vial, and prepare injections.
BPC-157 + TB-500 Blend Guide
How to combine BPC-157 and TB-500 in one syringe. Covers dual-vial reconstitution, dose calculation for each peptide, draw order, and blend volume.
Testosterone (TRT) Injection Guide
Complete Testosterone (TRT) guide: testosterone replacement therapy explained — protocols, injection frequency, cypionate vs enanthate, and how to calculate your injection volume.
Semaglutide vs Tirzepatide Dosing Compared
Semaglutide vs tirzepatide dosing compared: starting doses, titration schedules, max doses, and how to convert each weekly dose to syringe units.
Ozempic vs Wegovy: Dosing Differences Explained
Ozempic vs Wegovy dosing compared: both are semaglutide, but Ozempic tops out at 2 mg while Wegovy climbs to 2.4 mg. See the schedules and unit math.
Mounjaro vs Zepbound Dosing: Same Drug
Mounjaro and Zepbound are the same drug, tirzepatide, under two brand names. Compare the dosing and convert a weekly dose to syringe units.
Testosterone Cypionate vs Enanthate Dosing
Testosterone cypionate vs enanthate dosing compared: half-life, ester weight, injection frequency, and the exact mg-to-mL-to-syringe-units maths for each.
Switching From Semaglutide to Tirzepatide: The Maths
Switching from semaglutide to tirzepatide? They run on different mg scales, so you don't map mg-for-mg. The conversion maths and titration logic.
BPC-157 vs TB-500 Dosing Compared
BPC-157 vs TB-500 dosing compared: typical reconstitution, mcg-to-units maths, and how these two investigational research peptides actually differ.
How Long Does a Semaglutide Vial Last?
How long a semaglutide vial lasts is total mg divided by weekly dose. Worked examples, a weeks-of-supply chart, and the in-use discard window.
Injectable vs Oral Semaglutide Dosing
Injectable vs oral semaglutide dosing: why weekly mg (Ozempic, Wegovy) and daily mg (Rybelsus) don't line up, plus the unit maths for the injectable.
Semaglutide vs Liraglutide Dosing Compared
Semaglutide vs liraglutide dosing: weekly vs daily schedules, titration steps, and how to convert each dose to exact units on a U-100 syringe.
GLP-1 Dose Conversion Chart: mg to Units
Convert any weekly semaglutide or tirzepatide mg dose into mL and U-100 syringe units. Worked examples, a full conversion chart, and the one formula.
What BMI Do You Need for Semaglutide?
Semaglutide's weight-loss label uses BMI 30+, or 27+ with a weight-related condition. See the thresholds, a height-to-weight chart, and the BMI math.
Ozempic vs Mounjaro Dosing Compared
Ozempic vs Mounjaro dosing compared: Ozempic tops out at 2 mg weekly, Mounjaro at 15 mg. See both titration ladders and convert each dose to units.
Free Androgen Index vs Free Testosterone
Free androgen index vs free testosterone: FAI is a unitless ratio, calculated free T is a real concentration. How they differ and which to trust.
Testosterone Cypionate vs Propionate Dosing
Testosterone cypionate vs propionate dosing: half-lives, injection frequency, ester weight, and how to convert each dose to syringe units.
Calculated vs Measured Free Testosterone
Calculated free testosterone estimates the free fraction from total T, SHBG and albumin; measured uses equilibrium dialysis. When they agree and differ.
Testosterone Undecanoate vs Cypionate Dosing
Testosterone undecanoate vs cypionate dosing compared: every-10-week depot vs weekly injection, half-life, ester weight, volume, and the syringe maths.
Semaglutide vs Retatrutide Dosing Compared
Semaglutide vs retatrutide dosing compared: approval status, starting doses, titration, max doses, and how to convert each weekly dose to syringe units.
How SHBG Affects Free Testosterone
How SHBG changes your free testosterone: why a high SHBG lowers usable testosterone even at the same total, with worked free-index examples.
Retatrutide Titration Schedule Explained
Retatrutide titration schedule explained: how the phase-2 trials escalated weekly doses to 4, 8, and 12 mg, plus mg-to-syringe-unit conversions.
Semaglutide vs Dulaglutide Dosing Compared
Semaglutide vs dulaglutide dosing compared: starting doses, titration steps, max weekly doses, and how to convert a semaglutide vial dose to syringe units.
Tirzepatide vs Liraglutide Dosing Compared
Tirzepatide vs liraglutide dosing compared: once-weekly vs once-daily injections, titration ladders, mg scales, and converting each dose to syringe units.
Semaglutide Microdosing: Doses and Syringe Units
What semaglutide microdosing means, why the label starts at 0.25 mg, what low-dose evidence shows, and how to convert a small dose to syringe units.
Tesamorelin Dosing and Reconstitution Explained
How to dose and reconstitute tesamorelin (Egrifta SV): the 2 mg vial, 1.4 mg daily dose, sterile water volume, and converting mL to syringe units.
Semaglutide 5 mg vs 10 mg Vial Dosing
Semaglutide 5 mg vs 10 mg vial: the vial size sets the concentration and syringe units, not your mg dose. See the math, charts, and worked examples.
Total vs Free vs Bioavailable Testosterone
Total vs free vs bioavailable testosterone explained: what each fraction means, the percentages, and how to calculate free and bioavailable T from SHBG.
CJC-1295 vs Ipamorelin: Dosing and Units
CJC-1295 vs ipamorelin: how the two growth-hormone peptides differ in mechanism and half-life, plus how to convert each research dose to syringe units.
Sermorelin vs Tesamorelin Dosing Compared
Sermorelin vs tesamorelin dosing compared: typical daily doses, potency and half-life differences, and how to convert each mg dose to syringe units.
Tesamorelin vs CJC-1295: Dosing and Units
Tesamorelin vs CJC-1295 dosing compared: FDA status, daily vs weekly schedules, mg vs mcg, and how to convert each dose to U-100 syringe units.
Testosterone Enanthate vs Propionate Dosing
Testosterone enanthate vs propionate dosing: half-lives, injection frequency, weekly mg, and how to convert either ester to exact U-100 syringe units.
CJC-1295 DAC vs No-DAC: Dosing and Units
CJC-1295 with DAC is dosed about weekly; no-DAC (Mod GRF 1-29) daily. Compare half-life, dose frequency, and how to convert each to syringe units.
Ipamorelin vs Sermorelin: Dosing & Units Compared
Ipamorelin vs sermorelin: how these growth hormone peptides differ in receptor, half-life and dosing, plus how to convert any mcg dose to syringe units.
Semaglutide vs Tirzepatide vs Retatrutide Dosing
Semaglutide vs tirzepatide vs retatrutide: how the three GLP-1 dose scales compare, titration steps, and converting each weekly dose to syringe units.
Testosterone Cypionate vs Sustanon 250 Dosing
Testosterone cypionate vs Sustanon 250: ester blends, release curves, and injection frequency compared, plus converting each dose to syringe units.
Testosterone Injections vs Gel: Dosing Compared
Testosterone injections vs gel: how cypionate mg/week becomes syringe units, how gel doses in grams and pumps, and why the two routes don't line up.
CJC-1295 / Ipamorelin Blend: Reconstitution & Units
How to reconstitute a CJC-1295 and ipamorelin blend vial: read the per-peptide label, find each concentration, and convert doses to U-100 syringe units.
Thymosin Alpha-1 Dosing and Reconstitution
How thymosin alpha-1 is dosed, how to reconstitute a 1.6 mg, 5 mg, or 10 mg vial, and how to convert the 1.6 mg dose to exact syringe units.
MOTS-c Dosing and Reconstitution Explained
How to reconstitute a MOTS-c vial and convert any mg or mcg amount into exact syringe units, with worked examples and a dose-to-units chart.
Sermorelin Dosing and Reconstitution Explained
Sermorelin dosing and reconstitution explained: nightly dose ranges, how to mix a vial, and how to turn a mcg dose into U-100 syringe units.
Kisspeptin Dosing and Reconstitution Explained
How to reconstitute kisspeptin-10 or kisspeptin-54 and convert a mcg dose to millilitres and U-100 syringe units, with worked examples and honest caveats.
Melanotan II Reconstitution: Dose to Syringe Units
How to reconstitute a melanotan II vial and convert any dose to units on a U-100 syringe, with a mg-to-units chart and honest safety caveats.
GHRP-2 vs GHRP-6 Dosing Compared
GHRP-2 vs GHRP-6 dosing compared: GH potency and appetite differences, plus the identical reconstitution math to turn mcg doses into syringe units.
TRT Once-Weekly vs Twice-Weekly Injections
Once-weekly vs twice-weekly TRT: same weekly testosterone, different peaks, troughs, and syringe units per shot. Worked dose math and a units chart.
Cagrilintide Dosing and Reconstitution Explained
How to reconstitute a cagrilintide vial and convert any weekly mg dose into exact U-100 syringe units, with worked examples and a dose-to-units chart.
Retatrutide vs Tirzepatide Dosing Compared
Retatrutide vs tirzepatide dosing: trial dose scales, titration, and unit maths compared. Retatrutide is investigational and not FDA-approved.
HCG Dosing: Fertility Protocols vs TRT Support
How HCG dose ranges and IU-to-units reconstitution maths differ between fertility restart protocols and low-dose testicular support on TRT. Education only.
Wegovy vs Zepbound Dosing Compared
Wegovy vs Zepbound dosing compared: starting doses, titration steps, max doses, head-to-head weight loss, and how to convert each dose to syringe units.
Tirzepatide vs Dulaglutide Dosing Compared
Tirzepatide vs dulaglutide dosing compared: weekly dose ladders, max doses, half-lives, and why only compounded tirzepatide needs a units calculation.
Bacteriostatic Water vs Sterile Water
Bacteriostatic water vs sterile water: same reconstitution maths and syringe units, but one has benzyl alcohol for multi-dose reuse and one does not.
BMI vs Body Fat Percentage: What Each Measures
BMI vs body fat percentage explained: how each is calculated, why two people can share a BMI, and the healthy ranges for each.
PT-141 (Bremelanotide) Dosing and Reconstitution
How to dose and reconstitute PT-141 (bremelanotide): the FDA-approved 1.75 mg dose, mixing math for compounded vials, and any dose in syringe units.
Ipamorelin Dosing and Reconstitution Explained
How to reconstitute ipamorelin and convert its microgram doses to U-100 syringe units, with worked mixing math and an honest note that it is unapproved.
Gonadorelin vs HCG: Dosing and Syringe Units
Gonadorelin vs HCG dosing compared: how each acts on the HPG axis, typical doses, unit differences (mcg vs IU), and converting each to U-100 syringe units.
Compare your options: dose-by-dose guides
Choosing between two compounds, brands, or esters usually comes down to the dosing maths. These side-by-side guides put the schedules, dose scales, and syringe-unit conversions next to each other so you can see exactly how they differ. Education only — not medical advice.
GLP-1 & weight-loss comparisons
Testosterone, TRT & blood-marker comparisons
Peptide & reconstitution comparisons
Beginner Guides
Getting Started
What Is a Dose?
Understand the difference between a dose, the injection volume, and concentration, so the number on the label and the mark on the syringe finally line up.
What Is a Vial?
A clear look at what a vial is, how the rubber port and seal work, why sterility matters once punctured, and when an opened vial should be discarded.
What Is Injection Volume?
Understand what injection volume is, how concentration and dose decide the milliliters you draw, and why volume and dose are not the same thing.
What Does "Draw Up" Mean?
Understand what it means to draw up a dose: reading the syringe, getting the right injection volume, and the handling habits that keep each shot clean.
What Are Syringe Units?
Understand the difference between syringe units of volume and dose units like mg, IU, and mcg, so your label, prescription, and draw all use the same system.
What Is BAC Water?
Learn what bacteriostatic water is, why the benzyl alcohol preservative matters for multi-use vials, and how it is used to reconstitute peptide powder.
What Does Reconstitution Mean?
Learn what reconstitution means for peptide and HCG vials: adding water to powder, the concentration it creates, and what that means in syringe units.
mg vs mcg vs mL vs Units
Clear up the difference between mg, mcg, mL and units so you never mix a dose with a volume, plus how U-100 syringe marks actually convert to mL.
Syringe Basics
How to Read an Insulin Syringe
Read a U-100 insulin syringe with confidence: what each unit mark means, how units relate to mL, and how to draw the right volume without miscounting.
U-100 Syringe Units Explained
Learn what U-100 syringe units mean, why 100 units equals 1 mL, and how to read the barrel markings so you draw the exact volume your dose requires.
0.3mL vs 0.5mL vs 1mL Syringes
Compare 0.3mL, 0.5mL and 1mL syringes, learn to read the barrel markings, match volume to dose, and avoid misreading your draw before you inject.
Why 10 Units Does Not Always Mean the Same Dose
Find out why 10 syringe units can carry different actual doses, how concentration drives the gap, and why units and milligrams must never be confused.
Common Syringe Mistakes Beginners Make
Spot the syringe errors new injectors make most, from misreading units to reusing needles, and learn the simple checks that prevent dosing slips.
Medication Math Basics
Concentration Explained Simply
Concentration in plain terms: how mg per mL links your dose to the liquid you draw, why U-100 units differ from medicine units, and how to read it right.
How mg/mL Works
Understand what mg/mL really means: how concentration links the drug dose to the liquid you draw, and why one dose can need a different syringe amount.
Why Vial Strength Changes the Dose
See why a higher or lower vial concentration shifts the volume you draw for the same dose, and why checking strength on the label prevents errors.
Why Water Amount Changes Syringe Units
Understand how the amount of mixing water sets a peptide vial's concentration, and why more or less water changes the syringe units for the same dose.
Dose vs Volume Explained
Dose and volume are not the same. Learn how the active amount differs from the liquid you draw, and how concentration ties the two together before you inject.
Simple Injection Math Examples
Walk through worked dose examples step by step, from mg to mL to syringe units, so you can check your own injection math with confidence.
Testosterone (TRT) Beginner Guides
What Is Testosterone (TRT)?
A clear introduction to testosterone replacement therapy, how injectable esters dose over the week, and how to convert a prescription into injection volume.
What Is Testosterone Cypionate?
Understand testosterone cypionate as a slow-release injectable ester, how its concentration affects draw volume, and how dosing maps to syringe units.
What Is Testosterone Enanthate?
What testosterone enanthate is, how this oil-based ester releases over the week, and how to turn a prescribed mg dose into the right injection volume.
What Does mg per Week Mean?
See what a weekly mg figure for Testosterone (TRT) actually represents, how it splits across injections, and how to turn it into syringe volume you can measure.
Why Injection Frequency Matters
See how injection frequency smooths the peaks and troughs of testosterone esters, and why splitting a weekly dose changes the volume per shot.
What Is a Split Dose?
Learn what a split dose means in Testosterone (TRT), why injecting more often smooths peaks and troughs, and how the same weekly mg divides across each shot.
Testosterone (TRT) Terms Glossary
A plain-language glossary of Testosterone (TRT) and injection terms, from dose and concentration to esters and syringe units, so the maths and the labels finally make sense.
Peptide Beginner Guides
What Is a Peptide?
A plain-language look at what a peptide is, why vials arrive as powder, and how amino-acid chains relate to the dosing math you will meet later.
What Is Freeze-Dried Powder?
Learn why peptides arrive as freeze-dried powder, what lyophilization does, and why nothing is dosed until you add water to set the concentration.
What Is Bacteriostatic Water?
Understand what bacteriostatic water is, how its preservative inhibits bacterial growth after puncture, and why it is the usual choice for mixing peptides.
What Happens When You Mix a Peptide?
What really happens when you add water to a peptide vial, why the powder dissolves the way it does, and how mixing sets the concentration of every dose.
Why Peptides Are Measured in mcg
Learn why peptide doses are written in micrograms not milligrams, how that scale affects accuracy, and how it translates into syringe units after mixing.
Peptide Terms Glossary
Plain-language definitions for peptide terms like lyophilized, reconstitution, bacteriostatic water, and concentration, so the dose math makes sense.
GLP-1 Beginner Guides
What Are GLP-1 Medications?
A clear introduction to GLP-1 medications, how these incretin-based injectables signal appetite and glucose, and how semaglutide and tirzepatide compare.
Semaglutide Explained Simply
A clear, jargon-free look at how semaglutide works as a GLP-1 medicine, what affects appetite and glucose, and how weekly dosing fits in.
Tirzepatide Explained Simply
A plain-language look at tirzepatide, the dual GIP and GLP-1 medication, how it differs from semaglutide, and where dose math fits in your weekly routine.
What Does 0.25mg Mean?
Find out what a 0.25mg dose really means, how it differs from the syringe volume you draw, and how concentration links the two before you inject.
Why GLP-1 Doses Increase Over Time
Understand why GLP-1 medicines like semaglutide and tirzepatide are titrated upward, and how each dose step changes the syringe volume you draw.
What Is a Titration Schedule?
Understand how a GLP-1 titration schedule steps the dose up over weeks, why doses start low, and how each stage maps to units on the syringe.
GLP-1 Terms Glossary
A plain-language glossary of GLP-1 terms: receptor agonist, incretin, titration, dual GIP action and more, so semaglutide and tirzepatide labels make sense.
Lab Result Beginner Guides
What Is Total Testosterone?
Total testosterone counts the full amount in your blood, bound and unbound. Learn what the number means and how it feeds free testosterone math.
What Is Free Testosterone?
Understand what free testosterone is, why the unbound fraction matters more than the total, and how SHBG and albumin shape the number you can calculate.
What Is SHBG?
See how SHBG binds testosterone and shapes your free testosterone result, plus why it is one of the inputs behind calculated free T from your bloodwork.
What Is Albumin?
Understand what albumin is on a blood panel, how it loosely binds testosterone, and why it feeds into calculated free testosterone alongside SHBG.
What Is Estradiol?
A plain look at what estradiol is, why it shows up on Testosterone (TRT) bloodwork, how it relates to testosterone, and what a result on the panel is telling you.
What Is Hematocrit?
Understand what hematocrit measures, why this red-blood-cell figure is watched on Testosterone (TRT), and how to read the result on a routine blood panel.
Blood Test Terms Glossary
A clear glossary of Testosterone (TRT) blood test terms - total and free testosterone, SHBG, albumin and reference ranges - so you can read your results with confidence.
Safety & Handling Basics
How to Store a Vial
Keep medication vials safe with clear handling basics: sterile access, cleaning the rubber septum, discard timing, and following stricter label instructions.
Why Clean Technique Matters
Why sterile handling protects every injection, from disinfecting the vial top to using fresh needles, and how reused equipment can spread infection.
What Is Dead Space in a Syringe?
Understand dead space in a syringe and needle, why a little medication can stay behind, and how it quietly affects the volume you actually inject.
What to Check Before Using a Vial
Run through the practical checks before drawing from a vial, from label and concentration to puncture handling and sterile technique, to draw with confidence.
Beginner Injection Safety Checklist
A plain-language safety checklist for first-time injectors: sterile needles, vial septum prep, IM versus SubQ, and confirming your dose before you draw.
Testosterone (TRT) Basics
What Is Testosterone (TRT)?
A clear introduction to testosterone replacement therapy, how injectable esters dose over the week, and how to convert a prescription into injection volume.
Starting Testosterone (TRT): Practical Checklist
A practical pre-start checklist for Testosterone (TRT): baseline bloodwork, morning testing, dosing basics, and what to track once therapy begins.
Testosterone (TRT) Protocols Explained
Compare common Testosterone (TRT) injection protocols and frequencies, and learn how dose, vial strength, and timing combine to shape the volume you draw each week.
Daily vs Twice Weekly vs Every 3.5 Days
See how daily, twice-weekly and every-3.5-day testosterone schedules shape peaks and troughs, then split your weekly dose with our free Testosterone (TRT) calculator.
Testosterone Esters Explained
Understand how testosterone esters like enanthate and cypionate release slowly and shape your peaks, troughs, and how often you inject across the week.
Common Testosterone (TRT) Mistakes
Avoid frequent Testosterone (TRT) slip-ups, from confusing dose with volume to misreading vial strength, and convert your prescription cleanly with our free Testosterone (TRT) calculator.
Testosterone (TRT) Calculators & Dose Maths
Daily Testosterone (TRT) Microdose: Units Chart for 10-30mg Per Day
Daily testosterone microdose units chart: convert 10-30mg/day at 200mg/ml into insulin-syringe units, with the exact math and worked examples.
Splitting 100mg/Week Testosterone (TRT) Into Every-Other-Day Microdoses
Break a 100mg weekly Testosterone (TRT) total into ~28-29mg every-other-day microdoses, with exact U-100 syringe units worked out for 200mg/mL and 100mg/mL testosterone.
Low-Dose Testosterone for Women
The small weekly doses women's testosterone protocols typically use, why vial concentration makes tiny doses hard to measure, and how to draw them accurately on an insulin syringe.
200mg/ml vs 250mg/ml Testosterone: Draw-Up Volume Chart
Side-by-side draw-up volume chart for 200mg/ml vs 250mg/ml testosterone. See mL and insulin-syringe units for weekly doses 80-250mg, with the math shown.
200mg/Week Testosterone on 250mg/ml: Exact Draw in ml and Units
200mg testosterone on a 250mg/ml vial works out to 0.8ml (80 units) per week. See the exact draw, the twice-weekly split, and how to read it on an insulin syringe.
Testosterone Dose Calculator Guide
Turn a weekly testosterone prescription into an exact injection volume using vial strength and frequency. Check the figures with our free Testosterone (TRT) calculator.
How to Calculate Injection Volume
Turn a prescribed weekly testosterone dose into the exact mL to draw using vial strength, with worked steps and a quick check in the free Testosterone (TRT) calculator.
Testosterone (TRT) Every 3.5 Days Calculator Guide
See how a Testosterone (TRT) dose splits across an every-3.5-day schedule and what goes in each injection, then confirm the per-shot volume with our free Testosterone (TRT) calculator.
Testosterone Vial Calculator: How Long Will My Vial Last?
Work out how many weeks a testosterone vial lasts from its strength, your weekly dose, and injection frequency. Estimate it free with our vial calculator.
Dead Space and Wasted Testosterone Explained
Learn what syringe dead space is, how it wastes testosterone left in the needle hub, and how to account for it so your delivered dose matches the script.
Testosterone (TRT) Cost Per Week Calculator Guide
Estimate what your Testosterone (TRT) costs per week from vial price, strength, and weekly dose so you can compare options. Crunch it with our free Testosterone (TRT) cost calculator.
Lab Results
Free Testosterone Index: A Worked Calculation Example
A step-by-step free testosterone index calculation example using real total-T and SHBG lab numbers, plus unit conversion and how to read the result.
Testosterone Units Explained: nmol/L vs ng/dL
Make sense of nmol/L versus ng/dL on your testosterone bloodwork, learn the conversion factor, and read either result without second-guessing the number.
Testosterone Unit Converter Guide
See how testosterone lab and dose units relate, and convert between them with confidence so your prescription, vial label, and syringe draw all line up.
Free Testosterone Explained
What free testosterone is, why the unbound fraction matters more than total, and how SHBG and albumin shift it. Read your bloodwork with clearer context.
Free Testosterone Calculator Guide
Learn what calculated free testosterone means, which inputs it needs - total T, SHBG and albumin - and how to read the figure against your lab range.
SHBG and Albumin Explained
Understand how SHBG and albumin bind testosterone and shape your free testosterone result, so calculated free T numbers make more sense.
Free Androgen Index Explained
Understand the free androgen index, how total testosterone and SHBG feed the ratio, and why results should be read alongside symptoms and lab ranges.
Reading Testosterone (TRT) Bloodwork
Make sense of a Testosterone (TRT) blood panel: what total and free testosterone, SHBG, estradiol, and timing actually tell you about your therapy.
Injection Technique
IM vs SubQ Injections
Understand the difference between intramuscular and subcutaneous injections, where each delivers medication, and the safe-handling basics that apply to both.
Testosterone Injection Sites & Rotation
Where to inject testosterone — IM and SubQ sites, ventrogluteal vs glute, a rotation chart, and schedules for weekly, twice-weekly, EOD and daily.
Peptide Injection Sites & Rotation
Where to inject peptides — SubQ sites, the belly-button rule, GLP-1 rotation, and where to inject BPC-157 for knee, shoulder, Achilles and gut.
Syringe Units Explained
Understand what the units on an insulin syringe mean, how they relate to mL, and how to read your dose mark without second-guessing it.
Needle Sizes Explained
Learn how needle gauge and length differ for IM and SubQ injections, so you can pick the right size for your medication, site, and comfort.
How to Reduce Injection Pain
Calm, practical tips to make injections more comfortable, from needle handling and technique to clean preparation, written as plain general guidance.
Rotating Injection Sites
Learn why rotating injection sites protects tissue and absorption, plus a simple, repeatable pattern for spacing your IM and SubQ shots over time.
Injection Safety Checklist
A plain-language checklist for safer injections: fresh sterile needles, clean vial septums, and careful handling, drawn from CDC safe-injection guidance.
Peptide Basics
How Do You Verify a Peptide COA (Janoshik)?
How to verify a peptide COA: read the Janoshik lab report, check HPLC purity and LC-MS identity, and confirm the certificate matches your batch.
What Is Peptide Reconstitution?
Learn how reconstitution mixes a freeze-dried peptide vial with water, why it sets your concentration, and how that decides the syringe units you draw.
BAC Water Explained
Understand what bacteriostatic water is, why its benzyl alcohol preservative matters after a vial is punctured, and how diluent volume sets concentration.
Peptide Concentration Explained
See how peptide dose, vial strength, and water volume set your final concentration, so every unit you draw matches the dose you intended.
mg, mcg, mL and Units Explained
Sort out mg, mcg, mL and syringe units for peptide dosing: which are dose, which are volume, and how concentration ties them together before you draw.
How Much BAC Water Should I Add?
Learn how the bacteriostatic water you add sets a peptide vial's concentration and dose volume, then run the numbers in our reconstitution calculator.
Peptide Storage and Discard Dates
Know how long reconstituted peptides last in the fridge, what shortens their shelf life, and when to set a discard date and start fresh.
Peptide Calculators
Reconstitution mg-to-mL Concentration Chart for Any Vial
A reconstitution concentration chart mapping any vial strength and BAC water volume to final mg/mL. Worked math, a full lookup table, and how to read syringe units.
10mg Peptide Vial + 2ml BAC Water: Concentration and Units Chart
Reconstitute a 10mg peptide vial with 2ml BAC water and you get 5mg/ml (50mcg per unit). See the full mcg-per-unit and units-per-dose chart with worked math.
BPC-157 250mcg: How Many Units to Draw
Work out how many insulin-syringe units a 250mcg BPC-157 dose is after reconstituting a 5mg vial. Worked examples for 1, 2, 2.5 and 3mL of BAC water.
Retatrutide Dose-to-Units Chart (1mg to 12mg)
A retatrutide units chart across the full 1mg-12mg titration ladder. See exactly how many insulin-syringe units each dose equals at common reconstitution concentrations.
Peptide Reconstitution Calculator Guide
Turn lyophilized peptide powder into an accurate dose: pick a water volume, draw the right units, and check it with our free reconstitution calculator.
Peptide Blend Calculator Guide
Understand the math behind mixing two peptides in one vial, then split each dose accurately with our free peptide blend calculator.
BPC-157 Calculator Guide
Reconstitute a BPC-157 vial step by step: turn vial mg and bac water volume into a concentration and draw, then verify it with our free peptide calculator.
TB-500 Calculator Guide
Learn how to reconstitute a TB-500 vial, work out mcg per mL, and read the syringe draw in plain language. Run the numbers in our free peptide calculator.
BPC-157 + TB-500 Blend Guide
How to combine BPC-157 and TB-500 in one syringe. Covers dual-vial reconstitution, dose calculation for each peptide, draw order, and blend volume.
HCG
Reconstituting a 5000 IU HCG Vial: BAC Water to Units Chart
5000 IU HCG reconstitution chart: see how 1ml, 2ml, or 3ml of bacteriostatic water changes IU per syringe unit, with worked dose-to-units examples.
HCG 500 IU Twice Weekly: How Many Syringe Units to Draw
Convert a 500 IU HCG dose into insulin-syringe units after reconstitution. Worked examples for 5,000 and 10,000 IU vials at common water volumes.
HCG Calculator Guide
Learn the simple IU math behind HCG dosing: vial strength divided by water gives IU per mL, then work out your exact draw with the free HCG calculator.
HCG IU to Syringe Units Explained
Confused turning HCG IU into insulin-syringe units? See why IU is a dose and units are volume marks, and convert them safely with our free HCG calculator.
HCG 5,000 IU vs 10,000 IU Vials
See how 5,000 IU and 10,000 IU HCG vials change your draw volume after mixing, why the IU dose stays the same, and how to check it with our HCG calculator.
HCG Storage and Expiry
Understand how to handle reconstituted HCG, why puncture timing and refrigeration matter, and what affects how long a mixed vial stays usable.
GLP-1 Calculators
How Many Units Is 5mg Tirzepatide? 2.5-15mg Units Chart
Tirzepatide dose-to-units chart for every step from 2.5 to 15 mg at 5, 10, 15, 20 and 30 mg/mL, with worked examples for 5, 7.5, 10 and 15 mg.
2.4mg Semaglutide: Units to Draw at Each Reconstitution
2.4mg semaglutide: how many units to draw across 1mL, 2mL and 3mL BAC water fills. Worked math by vial size, plus a calculator to confirm your own draw.
Semaglutide Units Calculator Guide
Convert your semaglutide dose in mg or mcg into exact syringe units for your vial concentration with our free semaglutide units calculator.
Semaglutide Reconstitution Calculator Guide
Mix compounded semaglutide powder correctly: choose a water volume, find your dose in units, and confirm it with our free reconstitution calculator.
How Many Units Is 0.25mg Semaglutide?
Find out how many syringe units a 0.25mg semaglutide dose works out to once you know your vial concentration, then confirm it with the semaglutide calculator.
Tirzepatide Units Calculator Guide
Convert your tirzepatide mg dose into syringe units once the vial is mixed, and avoid common unit mix-ups. Try our free tirzepatide calculator.
Tirzepatide Reconstitution Calculator Guide
Mix a tirzepatide vial correctly: add the right diluent, find the concentration, and read the syringe units with our free tirzepatide calculator.
Compounded Semaglutide Vial vs Pen
Compounded semaglutide vial vs pen: why this calculator works for compounded vials but not Ozempic or Wegovy pens, how each delivery method works, and which you have.
GLP-1 Planning
GLP-1 Titration Planner Guide
Plan your GLP-1 titration week by week, see how step-up doses for semaglutide and tirzepatide work, and turn each mg into syringe volume with our free tools.
Semaglutide Titration Schedule
See how a typical semaglutide dose ladder steps up over weeks, why titration matters for tolerance, and how to track where you are.
Tirzepatide Titration Schedule
Understand how tirzepatide doses step up over weeks and what each milligram strength means, so you can convert any prescribed dose into a clean syringe draw.
Dose Escalation Calendar Explained
Map out a GLP-1 dose escalation calendar, see how weekly steps work for semaglutide and tirzepatide, and turn each dose into volume with our free tools.
Missed GLP-1 Dose Guide
What to consider after a missed semaglutide or tirzepatide dose, why schedules are set by your prescriber, and how the calculators handle dose and volume.
Storage & Safety
Medication Storage Calculator Guide
Learn the storage and handling basics for injectable vials, from sterile access to discard timing, so a punctured multi-dose vial stays as safe as possible.
Testosterone Storage Guide
Practical handling for testosterone vials: where to keep oil-based testosterone, what affects it, and why storage matters before you draw and inject a dose.
HCG Storage Guide
Practical pointers on storing HCG vials before and after mixing, keeping the septum clean, and following label and prescriber timing for safe handling.
Peptide Storage Guide
Store peptides the right way: how temperature, light, and bacteriostatic water affect lyophilized powder and reconstituted vials before and after mixing.
GLP-1 Storage Guide
How to store GLP-1 medication like semaglutide and tirzepatide - fridge, room temperature and travel basics - to keep your pen or vial usable between doses.