Hormones
Fertility
Health Checks
Women's Health Checks
Free Androgen Index (FAI) LIS Code: FAI
Measure free androgen index with a private blood test to assess hormone balance and androgen status.
Before your test
Any time of dayBook whichever slot suits you
Usually no fastingAny preparation this test needs is listed in your booking email
About 5 minutesA quick sample taken from your arm
Results onlineIn your secure online account, with the lab's reference ranges
Where you can test: SloughVictoriaNeasdenHome visit
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UKAS ISO 15189accredited laboratory
GMC-registereddoctors on hand
No GP referralbook directly
£37
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CHOOSE COLLECTION METHOD
⏱ Results in 4 hours
· LIS: FAI
ℹ️ TAT begins when your sample is received at our lab.
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Phlebotomy Fee: £25
A one-off £25 phlebotomy fee applies per visit — this covers your blood draw regardless of how many tests you book in the same appointment.
Test Categories
About this test
Free Androgen Index or FAI is a ratio used to determine abnormal androgen status in humans. The ratio is the total testosterone level divided by the sex hormone binding globulin (SHBG) level, and then multiplying by a constant, usually 100.
