What does DHT mean?
Dihydrotestosterone (DHT) is a potent hormone made from testosterone. It acts in hair follicles, skin and prostate tissue, where it contributes to male sexual development and influences body and scalp hair.
What it shows and why it matters
Dihydrotestosterone (DHT) is a potent hormone made from testosterone. It affects hair follicles, skin and prostate tissue, and plays an important role in male sexual development. Tracking DHT can help investigate hormone-related symptoms or show how medicines such as finasteride or dutasteride are working. Interpret it alongside testosterone, symptoms and the reference range printed on your pathology report.
How DHT appears on your report
Look for Dihydrotestosterone (DHT). It may also be printed as Dihydrotestosterone, 5-alpha-dihydrotestosterone, Androstanolone, Stanolone. The result is normally shown in nmol/L, next to the reference interval used by the laboratory that ran the test.
Note the collection date before you compare it with anything, along with the context that matters for this marker: testosterone treatment and 5-alpha-reductase inhibitors such as finasteride or dutasteride can change it. Assay method, age for female reference values and the performing laboratory's interval matter, and the blood result does not directly measure tissue activity.
DHT range in Australia
Vector shows an assay-dependent contextual tracking band of 0.4–3.3 nmol/L for DHT. It is not a universal optimal target or clinical threshold; use the interval printed by the laboratory that performed the test. Female reference values also vary with age.
This contextual band mirrors the app and the Vector Profile; the performing laboratory’s interval remains authoritative.
Interpretation limits
Hormone results can shift with age, sex, cycle stage, pregnancy, menopause, collection time, treatment and assay. One result rarely establishes an endocrine diagnosis.
The interval printed beside your result remains the authority for that specimen. Reference intervals, diagnostic thresholds, treatment targets and Vector's tracking bands answer different questions and should not be substituted for one another.
What to read alongside DHT
A single marker rarely explains itself. These results are commonly interpreted together with DHT, and Vector keeps them within reach of each other as your record grows.
When to discuss DHT with a clinician
A clinician discussion is appropriate when the result is persistently outside the performing laboratory's interval, symptoms are significant, fertility or pregnancy is relevant, or prescribed hormones may be affecting it.
Tracking DHT over time
One DHT result is a single point. Import the report into Vector, check the extracted value, unit and collection date, and it becomes the start of a series instead — with each later report adding a dated point you can actually compare against.
Further reading
DHT is read the same way every other result on the report is. These two guides cover that method rather than this marker:
- How to read an Australian pathology report — A practical guide to dates, units, reference intervals and the context that belongs beside an Australian pathology result.
- Pathology report reference ranges: what they mean — Understand the laboratory interval, Australian guidance and the product context Vector adds to a result over time.
Common questions
What is a normal DHT range in Australia?
Australia has no nationally harmonised reference interval for DHT, so the range printed on your report varies with the laboratory and assay. Vector shows 0.4–3.3 nmol/L as an assay-dependent contextual tracking band, not a universal optimal target or clinical threshold. Female reference values also vary with age. Always use the interval beside your own result.
How should the DHT tracking band be interpreted?
Vector shows 0.4–3.3 nmol/L as an assay-dependent contextual band for DHT, with sex-specific bands of 0.4–3.3 for men and 0.0–1.0 for women. It is not a universal optimal target or clinical threshold. Female reference values also vary with age. Interpret the result with the performing laboratory's interval, treatment and symptoms.
What unit is DHT reported in on Australian pathology reports?
DHT is usually reported in nmol/L on Australian pathology reports. The performing laboratory prints a reference interval in the same unit beside the result, and that interval is the one that governs your individual result.
What can change your DHT result?
Testosterone treatment and 5-alpha-reductase inhibitors such as finasteride or dutasteride can change it. Assay method, age for female reference values and the performing laboratory's interval matter, and the blood result does not directly measure tissue activity.
What else is DHT called?
Dihydrotestosterone (DHT) may also appear as Dihydrotestosterone, 5-alpha-dihydrotestosterone, Androstanolone, Stanolone on a pathology report. Laboratories differ in the label they print, which is why Vector matches on several names for the same analyte.
Sources
- Mayo Clinic Laboratories: Dihydrotestosterone, SerumMethod-specific serum DHT reference values and interpretation, including the effect of 5-alpha-reductase inhibitors.
- Healthdirect: hormone testsGeneral consumer context for hormone testing and clinical follow-up.
Published 16 August 2026 · Updated 29 August 2026 · Author Vector