This is an important test used to help diagnose or monitor treatment of 5α-reductase deficiency.

Venous blood
1 tests included
7 days turnaround



About Dihydrotestosterone

What is dihydrotestosterone?

Dihydrotestosterone (DHT) is a male sex hormone (an androgen) produced from the breakdown of testosterone by the enzyme 5α-reductase. DHT plays a fundamental role in male embryonic development and maturation of male genitalia during puberty.

Hormones are chemical messengers used by the body to respond to internal and external influences. The activity of hormones must be finely regulated to produce the desired physiological effect. This regulation is typically coordinated by complex interactions between several different hormones. Both excessive production and a deficiency in the production of steroid hormones can cause ill health. Disorders related to DHT include testicular problems, delayed puberty, and 5α-reductase deficiency (development of abnormal or female genitalia in biological males).

Why take the test?

This test measures the level of dihydrotestosterone (DHT) in the blood. It is typically used to diagnose or monitor treatment of 5α-reductase deficiency and male sexual development problems.

What's tested


How it works



Purchase your Kit

Just order a test online and get your kit delivered right to your door unless you are ordering a COVID-19 Fit to Fly test where you will be given appointment options to attend our clinics across the United Kingdom for a nose and throat swab PCR test at the checkout stage.



Take your test and post

Follow our simple instructions to take your sample and post back the enclosed prepaid envelope to our accredited lab for processing. We also offer home or workplace visits by a qualified nurse. For COVID-19 Fit to Fly tests you must attend one of our partner clinics for our trained collection officers to take your sample. You will then have the results emailed to you.



Get results directly to your dashboard

You will receive an email notification from our medical team when your results are available on your secure personalised health dashboard.