Free androgen index

Test information: A free androgen index (FAI) is a test which is ordered to help interpret the results of testosterone tests and allows the active hormone concentration to be measured. It is calculated using the testosterone result and the result of sex hormone binding globulin (SHBG): FAI = (total testosterone/SHBG) x 100. FAI is used to investigate hyperandrogenism in females and can help interpret testosterone results in males.

Specimen Type(s)

• Blood;

Other Acceptable Specimen Type(s)

N/A

Specimen Container - Adult

• N/A;

Specimen Container - Paediatric

• N/A;

Analytes

• N/A;

Part of a test profile?

No

Volume (min) of sample to be sent to laboratory

4ml

Patient Preparation, Sample Handling and Transport

N/A

Maximum add on time

N/A

Units and Reference Ranges / Interpretation

RR for Female Less than 1 year - 0.0 -1.3% 1yr to less than 9 yrs - 0.0 - 1.3% 9yrs to less than 14 yrs - 0.1 - 2.6% 14yrs to less than 19 yrs - 2.6 -6.5% 19  to less than 50 yrs - 0.7 - 8.7% 50yrs and above - 0.5 - 4.7% RR for Male Less than 1 year - 0.0 - 32.7% 1yr to less than 9 yrs - 0.0 - 0.6% 9yrs to less than 14 yrs - 0.2 - 34.7% 14yrs to less than 19 yrs - 3.6 - 83.3% 19  to less than 50 yrs - 24.5 - 113.3% 50yrs and above - 19.3 - 118.4%

UKAS number

8869

UKAS accredited test?

Yes

Comments

N/A

If you have any queries about a test or results interpretation please contact us.