Women's testosterone · microdose maths

Last updated: June 2026 · Reviewed June 2026 · Built by the InjectBuddy team

How much testosterone do women take? Microdose ranges & unit maths

Low-dose testosterone for women is typically written in single-digit milligrams per week — injectable compounded use commonly sits around 0.5–10 mg/week, far below male Testosterone (TRT). At that scale the real difficulty is precision: a few milligrams is often a tenth of a milliliter or less, so a one- or two-unit misread on a U-100 syringe is a large slice of the whole dose. This guide shows the typical microdose ranges and the small-number arithmetic for drawing them accurately.

This is a maths and measurement guide, not medical advice. Testosterone therapy for women is off-label in many regions and there is no widely approved female-specific injectable product — it must be prescribed and supervised by a clinician who knows your history. Every dose number below is illustrative arithmetic from published ranges, not a recommendation. Your dose, ester, and schedule are your prescriber's decision, not this page's.

Key takeaways

Typical range: female injectable microdoses commonly fall around 0.5–10 mg/week (literature ranges, individualised by prescriber).
Two conversions: mg ÷ (mg/mL) = mL, then mL × 100 = units on a U-100 syringe (so 0.01 mL = 1 unit).
Concentration is everything: the same 2.5 mg dose is 12.5 units from a 20 mg/mL vial but only 1.25 units from a 200 mg/mL vial.
Use a 0.3 mL (30-unit) syringe and a lower-strength compounded vial so the fill is large enough to read.

Open the female HRT dose calculator → — enter your vial strength, weekly dose, and schedule, and it returns the exact draw in units. Nothing you enter is stored.

How much testosterone do women's protocols use?

The difference from male Testosterone (TRT) is scale. Male protocols run in the tens to low hundreds of milligrams per week; female microdoses run in single-digit milligrams per week. The 2019 Global Consensus Position Statement frames the only evidence-based indication as hypoactive sexual desire dysfunction in post-menopausal women, aiming to restore testosterone to the normal pre-menopausal range — not above it — which is why the amounts are so small.

Injectable compounded protocols are commonly written in the region of 0.5–10 mg per week, often split into smaller, more frequent subcutaneous doses; creams, gels, and pellets sit on different scales again. A 2019 Lancet meta-analysis found benefit on sexual function but flagged that blood levels frequently overshot the female range when male-formulated products were used — a direct argument for getting the small-volume maths right. None of these numbers is a recommendation; your figure comes from your prescription. See also men's vs women's testosterone dosage and testosterone esters explained.

How this is calculated

At these doses the arithmetic is simple but the measurement is unforgiving. 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. Most licensed testosterone cypionate injection is 200 mg/mL (per the FDA-approved DailyMed label), but female microdosing usually relies on lower-strength compounded vials — 10 to 50 mg/mL — so a few milligrams becomes a readable volume. For the markings, see U-100 syringe units explained. A 0.3 mL (30-unit) syringe is the usual choice, because a small fill sits mid-barrel where the marks read clearly.

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.

Weekly microdose → units by concentration

Take a weekly microdose, split it twice weekly, and read the resulting fill at three vial strengths. A 200 mg/mL vial pushes most doses below 3 units — effectively undrawable — while a 20 mg/mL compounded vial keeps the same dose in a readable 5–25 unit window.

Weekly dose	Per injection (2×/wk)	Units @ 10 mg/mL	Units @ 20 mg/mL	Units @ 200 mg/mL
1 mg	0.5 mg	5 u	2.5 u	0.25 u
2 mg	1 mg	10 u	5 u	0.5 u
4 mg	2 mg	20 u	10 u	1 u
6 mg	3 mg	30 u	15 u	1.5 u
8 mg	4 mg	40 u	20 u	2 u
10 mg	5 mg	50 u	25 u	2.5 u

The milligram dose is identical across the strength columns — only the readable volume changes. A 0.3 mL barrel holds everything in the 20 mg/mL column; the larger 10 mg/mL fills above 30 units need a 0.5 mL barrel. See 0.3mL vs 0.5mL vs 1mL syringes.

Worked microdose examples

Each block below is independent arithmetic using the two conversions above.

1. 5 mg/week, twice weekly, 20 mg/mL

Per injection: 5 ÷ 2 = 2.5 mg. mg→mL: 2.5 ÷ 20 = 0.125 mL. mL→units: 0.125 × 100 = 12.5 units. Draw to the 12–13 unit mark on a 0.3 mL syringe.

2. The same 2.5 mg from a 200 mg/mL vial

2.5 ÷ 200 = 0.0125 mL → 1.25 units. That is barely past the first mark — essentially undrawable, which is why high-strength vials are the wrong tool for a female microdose.

3. 2 mg/week, once weekly, 10 mg/mL

2 ÷ 10 = 0.2 mL. 0.2 × 100 = 20 units — a clean fill on a 0.3 mL barrel.

4. 4 mg/week split every 3.5 days, 20 mg/mL

Per injection: 4 ÷ 2 = 2 mg. 2 ÷ 20 = 0.1 mL. 0.1 × 100 = 10 units — landing exactly on the 10-unit mark.

5. 7 mg/week daily microdose, 10 mg/mL

Per injection: 7 ÷ 7 = 1 mg/day. 1 ÷ 10 = 0.1 mL. 0.1 × 100 = 10 units daily — small but readable.

6. 3 mg/week, twice weekly, 25 mg/mL

Per injection: 3 ÷ 2 = 1.5 mg. 1.5 ÷ 25 = 0.06 mL. 0.06 × 100 = 6 units. Round-number reads like this are the goal — pick a strength that makes the units land cleanly.

7. 1 mg/week, once weekly, 10 mg/mL

1 ÷ 10 = 0.1 mL → 10 units. The smallest doses are still drawable if the vial is dilute enough; the same 1 mg from a 50 mg/mL vial would be only 2 units.

8. Rounding cost check

Rounding a 12.5-unit dose to 12 units gives 0.12 mL = 2.4 mg instead of 2.5 mg — a 4% shortfall. Rounding the same way every time keeps the weekly total consistent.

Confirm every real draw with the female HRT dose calculator rather than rounded examples.

Accuracy notes for very small doses

Use a low-concentration vial where possible. A female 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 consistently. Rounding the same way each time keeps your weekly total close to what was prescribed.
Never reuse a needle or syringe — use a fresh single-use one per injection, per standard safe-injection practice.

So, how much testosterone do women take?

Women prescribed injectable testosterone typically receive 0.5–10 mg per week, far below male TRT doses, with the goal of restoring a normal pre-menopausal level rather than raising it above the female range. The draw volume follows two steps: divide the per-injection milligram dose by the vial concentration (mg/mL) to get milliliters, then multiply by 100 to read the units mark on a U-100 syringe. Because these amounts are so small, vial concentration is the critical variable — a 20 mg/mL compounded vial turns a 2.5 mg dose into a readable 12.5 units, while a 200 mg/mL vial compresses the same dose to barely 1 unit. Use the female HRT dose calculator to convert your own prescribed dose and vial strength into an exact draw in seconds.

FAQs

How much testosterone do women take?

Women prescribed injectable testosterone typically receive 0.5–10 mg per week, far below male TRT doses. The exact figure is individualised and set by a prescriber; this page does not recommend a dose.

Why does a low-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.

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.

How do I convert a milligram dose to syringe units for a female microdose?

Two steps: divide the dose in milligrams by the vial concentration in mg/mL to get the volume in milliliters, then multiply by 100 to read the units mark on a U-100 syringe (so 0.01 mL = 1 unit). For example, 2.5 mg from a 20 mg/mL vial is 2.5 divided by 20 = 0.125 mL, multiplied by 100 = 12.5 units.

Sources

Davis SR, Baber R, Panay N, et al. Global Consensus Position Statement on the Use of Testosterone Therapy for Women. J Clin Endocrinol Metab. 2019;104(10):4660–4666. pubmed.ncbi.nlm.nih.gov/31498871.
Islam RM, Bell RJ, Green S, Page MJ, Davis SR. Safety and efficacy of testosterone for women: a systematic review and meta-analysis of randomised controlled trial data. Lancet Diabetes Endocrinol. 2019;7(10):754–766. pubmed.ncbi.nlm.nih.gov/31353194.
Hikma Pharmaceuticals USA Inc. Testosterone Cypionate Injection, USP 200 mg/mL — FDA label. DailyMed. dailymed.nlm.nih.gov.
CDC. Safe Injection Practices and Your Health. 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.