Pathology Handbook

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Testosterone (Sendaway Test)

Alternative Names:

Total testosterone

Laboratory:

Clinical Biochemistry

Test Code:

TES

Medicare rebatable:

Yes

Specimen Types:

Serum
Plasma

Container Types:

SST
Lithium Heparin (with Gel)

Adults Volume or Mass:

6 mL

Collection & Request Instructions:

Note: For retrospective test requests;

Serum stable for up to 7 days at either 2-8C or frozen (-20C or colder).

Avoid more than one freeze/thaw cycle.

Transport Instructions:

Room Temperature

Processing Instructions:

Centrifuge

Assay Frequency:

Twice weekly

External Laboratory:

The Alfred Pathology Service (APS)

External Laboratory details...

External Transport Instructions:

Send at 4'C with Ice Pack

Additional Notes:

Reference Interval:

Source- Abbott 2nd Gen Testosterone (REF 2P13, Nov 2012)

Adult Males: 8.0 - 30.0 nmol/L

Adult Females: 0.4 - 2.0 nmol/L

New assay and Reference Interval from 20/6/2013.

Note: Male Reference Interval Revised by Abbott late 2013

Studies show testosterone levels in women falling with age. This process starts before the menopause and continues further after the menopause (Yeap et al. JCEM 97: 408-415, 2012). In healthy older men testosterone levels also drop mildly with age (Yeap et al. JCEM 97: 4030-4039, 2012).

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