Free Testosterone (Calc), Testosterone, SHBG, Albumin, FAI

IC5001

Synonym(s):
Specimen Container
Gel separator tube (Adult)
Microtube (Paeds)
Specimen Requirement

​Plain Blood
Adult: 5 mL
Paediatric: 1.3 mL


Invert blood 5 times after blood collection ensures the clot-activating factors is well mixed with the blood. This will ensure results are reliable.

Orderable as Urgent? No
Turn Around Time

​3 - 4 hrs

Reference Value(s)
Refer to test name, 'Testosterone' and 'Albumin'.
Sex Hormone Binding Globulin (SHBG) -
Females:
Age GroupLower Limit (nmol/L)Upper Limit (nmol/L)
1 month - < 1 year36.2229
1 - < 8 years41.8188.7
8 - < 11 years26.4162.4
11 - < 13 years14.9107.8
13 - < 15 years11.298.2
15 - < 17 years9.884.1
17 - < 19 years10.8154.6
19 years & above11.7137.2
Males:
Age GroupLower Limit (nmol/L)Upper Limit (nmol/L)
1 month - < 1 year36.2229
1 - < 8 years41.8188.7
8 - < 11 years26.4162.4
11 - < 13 years14.9107.8
13 - < 15 years11.298.2
15 - < 19 years9.749.6
19 years & above11.278.1
Free Testosterone (Calculated using Vermeulen equation) -
19 years & aboveFemales0.003 - 0.058 nmol/L
19 years & aboveMales0.180 - 0.994 nmol/L
Free Androgen Index (FAI) -
Pre-menopausal women: <= 7.3
Post-menopausal women: <= 8.0
Testing Laboratory Location KKH
Laboratory ​Clinical Chemistry
Contact Number 6394 1383
Day and Time Performed
​Monday - Friday: 0800 - 1730 hrs
Saturday: 0800 - 1230 hrs
Orderable on CPOE? Yes
Downtime Form

Clinical Chemistry - Form A

Change History Notes

  • 27 May 2024 09:00 AM

    Update of Specimen Requirement.

  • 07 Oct 2022 12:00 AM

    ​Updated Reference Value(s).

  • 18 Oct 2021 03:10 PM

    ​Updated Specimen Requirement, Turn Around Time and Reference Value(s).

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Last Updated - 23 Apr 2025