5a-Androstanediol is a testosterone metabolite that is more androgenic than b-Androstanediol. It is metabolized via the 5-alpha metabolic pathway (= increased 5α-reductase activity). In contrast, the 5-beta metabolism makes androgens less potent.
Increased 5a-reductase activity may be accompanied by clinical signs of androgenicity (excess facial hair growth, scalp hair loss, acne, irritability, oily skin, prostate issues in men...etc).
It's important to look at this marker and compare it to 5b-Androstanediol. If your 5a-Androstanediol (this marker) and 5a-DHT are increased and 5b-Androstanediol is normal to low then you can do things to lower the preference of your body to move towards that 5-alpha metabolic pathway.
If your overall testosterone is elevated as well, please refer to the main testosterone biomarker as you have to address the overall testosterone level and which pathway (alpha vs. beta) your body is choosing.
Technically, 5a-Androstanediol can also be formed from DHEA metabolites without going through the testosterone pathway, but they generally tend to correlate with testosterone production.
Every lab result you’ve ever had, charted and explained.
Healthmatters is a tracker for your lab results. Upload a report from any lab, any country — every marker charted and explained.
Start with my report →All our content is backed by peer-reviewed studies, academic research, and trusted medical sources. We’re committed to accuracy and transparency — see our editorial policy for details.