Women's TRT

Last updated: June 2026

Low-Dose Testosterone for Women: Typical Doses and How to Measure Them

Women's testosterone protocols use far smaller weekly amounts than male TRT — often just a few milligrams a week — which makes the volume you draw tiny and easy to get wrong. This guide explains the small doses commonly used, why accuracy is the real challenge at this scale, and how to draw the exact amount on an insulin syringe. It is a measurement reference, not a dosing recommendation: the right dose for you is set by your prescriber.

This is a maths and measurement guide, not medical advice. It explains how low-dose protocols work and how to draw small volumes accurately — it does not recommend a dose. Testosterone therapy for women is off-label in many countries and must be prescribed and supervised by a clinician who knows your history. The dose, ester, and schedule that are right for you are their decision, not this page's.

How much testosterone do women's protocols use?

The headline difference from male TRT is scale. Male protocols are usually measured in the tens to low hundreds of milligrams per week; women's testosterone protocols are typically measured in single-digit milligrams per week. Clinical and consensus literature describes female testosterone therapy as aiming to restore testosterone to the normal pre-menopausal range rather than to raise it — which means much smaller amounts (Davis et al., Global Consensus Position Statement, 2019).

Exact figures vary by formulation and prescriber, but injectable compounded protocols are commonly written somewhere in the region of 0.5–10 mg per week, often split into smaller, more frequent subcutaneous doses to keep levels steady. Creams, gels, and pellets sit on different scales again. None of these numbers is a recommendation — they are the ranges described in the literature, and your own figure comes from your prescription.

Because approved female-specific testosterone products are limited, much of this use is off-label and individualised. For the underlying ideas, see what TRT is, what mg per week means, and testosterone esters explained.

Why the small volume is the real challenge

At these doses the arithmetic is simple but the measurement is unforgiving. A few milligrams of testosterone drawn from a standard vial is a very small volume — often a tenth of a millilitre or less — and at that scale a one- or two-unit misread on the syringe is a large percentage of the whole dose.

Two conversions get you from a prescription to a syringe mark:

mg → mL: dose (mg) ÷ vial concentration (mg/mL) = volume (mL)
mL → units: volume (mL) × 100 = units on a U-100 insulin syringe (so 0.01 mL = 1 unit)

The vial concentration matters more than any other number: the same 2.5 mg dose is a different fill from a 20 mg/mL compounded vial than from a 200 mg/mL vial. If the unit markings are unfamiliar, see how to read an insulin syringe and syringe units explained. A low-dead-space 0.3 mL (30-unit) syringe is the usual choice, because a small fill sits mid-barrel where the marks are easiest to read.

On a U-100 insulin syringe the scale runs 0–100 units across 1 mL, so 100 units = 1 mL and each 10-unit mark is 0.1 mL. The unit marks measure volume on the barrel, not the amount of drug — the same mark holds a different dose at a different vial strength.

Worked example: 5 mg/week split twice weekly

Example — compounded 20 mg/mL vial

Inputs: 5 mg/week total, twice weekly (2 injections), testosterone at 20 mg/mL (a typical compounded low-dose strength).

Step 1 — dose per injection: 5 mg ÷ 2 = 2.5 mg.

Step 2 — mg to mL: 2.5 mg ÷ 20 mg/mL = 0.125 mL.

Step 3 — mL to units: 0.125 mL × 100 = 12.5 units on a U-100 syringe.

You would draw to about the 12–13 unit mark on a 0.3 mL (30-unit) insulin syringe, where that fill sits mid-barrel and reads clearly.

That third step is the fiddly bit — a half-unit either way at this scale is a real fraction of the dose. This is exactly what the tool removes: enter your own numbers in the women's low-dose testosterone microdosing calculator → and it returns the exact fill and shows the syringe.

Why the vial strength makes or breaks accuracy

Take the same 2.5 mg per-injection dose from a high-strength 200 mg/mL vial instead of a 20 mg/mL one: 2.5 ÷ 200 = 0.0125 mL = 1.25 units. That is almost impossible to draw accurately on any syringe — which is why women's low-dose protocols usually use lower-concentration compounded vials. The table below holds a twice-weekly schedule and shows how many units each weekly dose works out to at the two strengths.

Weekly dose	Per injection (2×/wk)	Units @ 20 mg/mL	Units @ 200 mg/mL
2 mg	1 mg	5 u	0.5 u
4 mg	2 mg	10 u	1 u
6 mg	3 mg	15 u	1.5 u
8 mg	4 mg	20 u	2 u
10 mg	5 mg	25 u	2.5 u

The dose in milligrams is identical across both columns — only the readable volume changes. For choosing a barrel, see 0.3mL vs 0.5mL vs 1mL syringes.

Accuracy notes for very small doses

Use a low-concentration vial where possible. A women's dose from a 200 mg/mL vial can be 1–2 units — too small to draw reliably. Compounded low-strength vials put the same dose at a readable 5–25 units.
Pick a 0.3 mL (30-unit) syringe. Small fills sit mid-barrel where the marks are clearest, and low-dead-space syringes waste less of a tiny dose.
Round to the nearest readable mark and be consistent. Rounding the same way each time keeps your weekly total close to what was prescribed.
Never reuse a needle or syringe. Use a fresh sterile single-use syringe for each injection, per standard safe-injection practice.
Confirm every draw with the calculator. Enter your exact weekly dose, schedule, and vial strength into the women's low-dose testosterone microdosing calculator rather than relying on the rounded examples above.

How to use the calculator

The women's low-dose testosterone microdosing calculator is built for exactly these small numbers — it accepts dose increments down to 0.5 mg/week and defaults to a 0.3 mL syringe. To use it:

Enter your vial concentration (mg/mL) from the label.
Enter your prescribed weekly dose (mg/week) — it goes as low as 0.5 mg.
Choose your schedule (weekly, or every N days for daily/EOD splits).

It returns the per-injection dose, the exact draw volume, and the unit mark on the syringe, updating as you type. Nothing you enter is stored.

FAQs

How much testosterone do women take?

Far less than men. Women's protocols are typically written in single-digit milligrams per week — the literature describes doses aimed at restoring a normal pre-menopausal level, commonly in the region of 0.5–10 mg/week for injectable use, with creams and pellets on different scales. The exact figure is individualised and set by your prescriber; this page does not recommend a dose.

Why does my dose look like such a tiny amount on the syringe?

Because the volume depends on the vial concentration. A few milligrams from a standard 200 mg/mL vial is barely a unit or two; the same dose from a compounded 20 mg/mL vial is a readable 5–25 units. Low-concentration vials make small doses measurable.

Can I just use a regular TRT calculator?

You can, but most general calculators assume male-sized doses and standard syringes. The microdosing calculator is set up for sub-therapeutic doses — increments down to 0.5 mg/week and a 0.3 mL syringe by default — so the small numbers don't round away.

What syringe should I use for low-dose testosterone?

A 0.3 mL (30-unit) U-100 insulin syringe is the usual choice. Small fills sit in the middle of the barrel where the markings are easiest to read, and low-dead-space designs waste less of a tiny dose.

Is testosterone approved for women?

Approved female-specific testosterone products are limited, so much prescribing is off-label and individualised. Whether testosterone is appropriate, and at what dose, is a decision for a clinician who knows your history — this guide is a measurement tool, not medical advice.

Sources

Davis SR, et al. Global Consensus Position Statement on the Use of Testosterone Therapy for Women. J Clin Endocrinol Metab / Climacteric / Maturitas. 2019. pubmed.ncbi.nlm.nih.gov.
U.S. Food and Drug Administration. Testosterone Information. www.fda.gov/drugs/postmarket-drug-safety-information-patients-and-providers/testosterone-information.
CDC. Safe Injection Practices — Injection Safety. www.cdc.gov/injection-safety/about/index.html.

This guide is for general educational purposes only and does not constitute medical advice. Always follow your prescriber's specific instructions.