Test library
Dihydrotestosterone Blood Test
A DHT blood test measures dihydrotestosterone, a potent androgen involved in male characteristics and hair follicle activity. It is used to evaluate androgen balance and related concerns.
Order Dihydrotestosterone (DHT) Blood Test
Order online and visit a local collection site, or choose an at-home kit where available. No referral and no insurance required.
Order Dihydrotestosterone (DHT) Blood Test- Typical turnaround
- 1-3 business days
- Starting price
- From $189
- Results
- Confidential, online
Quick answer
A DHT blood test measures the level of dihydrotestosterone, an androgen produced from testosterone in the body. It is often ordered when a provider is evaluating androgen-related concerns such as hair thinning or prostate-related questions in men, and it may be combined with testosterone and other hormone tests. Results are interpreted with age, symptoms, and additional lab work.
What this test measures
Dihydrotestosterone is formed from testosterone by an enzyme called 5-alpha reductase and is significantly more potent than testosterone itself. It plays a role in male sexual development and prostate growth, and it acts on hair follicles, which is why it is often discussed in the context of pattern hair thinning.
The test measures DHT in a serum sample collected from a vein, and some laboratories prefer a morning collection. Because DHT is influenced by testosterone and other hormones, it is frequently ordered with total testosterone, free testosterone, sex hormone-binding globulin, or estradiol. Reference ranges come from the performing laboratory.
People may order this test when evaluating hair thinning or other androgen-related symptoms, or when a provider wants a broader view of hormone balance. DHT can also be measured in women when androgen excess is being considered. A single result is not a diagnosis; a qualified healthcare provider should interpret it with the full clinical picture.
- Dihydrotestosterone (DHT)
- Total testosterone
- Free testosterone
- Sex hormone-binding globulin (SHBG)
- Estradiol
- DHEA sulfate
- Prostate-specific antigen (PSA) when included
- Luteinizing hormone (LH) when included
Why people order this test
- Evaluate androgen-related hair thinning
- Investigate suspected androgen excess
- Assess hormone balance in men
- Support prostate-related evaluations
- Monitor changes alongside a provider
- Establish a baseline before a specialist visit
How to prepare
Some laboratories prefer a morning collection because hormone levels can vary during the day. Fasting is not usually required unless other panel components call for it. Follow the specific instructions provided with your order.
Understanding your results
Results are generally available within 1-3 business days. Values are compared with laboratory reference ranges and interpreted alongside other hormone measurements. A qualified healthcare provider should explain what the pattern may mean in your situation.
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Frequently Asked Questions
What is DHT?
Dihydrotestosterone is an androgen made from testosterone. It is involved in male development and prostate function and can influence hair follicle activity.
Who might order a DHT test?
It may be ordered when evaluating androgen-related symptoms such as hair thinning, or as part of a broader hormone assessment recommended by a provider.
Do I need to fast?
Fasting is not usually required for DHT alone, but it may be requested if additional fasting tests are included in your order.
How does DHT differ from testosterone?
DHT is a more potent androgen produced from testosterone. Measuring both can give a provider a fuller picture of androgen activity.
Can a DHT result explain hair loss by itself?
No. Hair loss has multiple causes, and a qualified healthcare provider should interpret DHT alongside other findings and your history.
Ready to get tested?
Order online and visit a collection site near you, or choose a mail-in kit. No referral and no insurance required.
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