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General
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Clinical Use:
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Testosterone is a steroid hormone. In blood, testosterone is bound to specific proteins, the most important of which is sex-hormone binding globulin (SHBG). In males, decreased testosterone levels occur in:
primary or secondary hypogonadism, Cryptorchidism, Post-trauma loss of libido, Klinefelter's syndrome
An increased production of testosterone eg in the case of hormonally active testicular tumours, does not result in any objectifiable changes in the male.
In females, testosterone levels are used in the investigation of amenorrhoea, infertility, hirsutism and virilization. |
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Availability:
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Samples are tested routinely during the testing laboratory's hours of operation. |
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Code:
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TES |
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Handling Instructions (to laboratory):
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Send sample chilled. |
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Hyperlink:
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Reference Interval:
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Female <2.0 nmol/L (Pathwest RPH reference interval study)
Male 10 - 35 nmol/L
FAI: <6.0
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Collection Requirements
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Container:
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Serum Sep. Tube-SST (GOLD), |
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Sample Type:
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Minimum Collection Volume:
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500uL |
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Collection Instructions:
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If dexamethasone suppression
test requested and
dexamethasone dose already
taken, collect sample for
dexamethasone suppression
test first and schedule the
testosterone in 1 week. |
Processing Requirements
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Alternate Containers:
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Lithium Heparin, No Gel (DKGNLITH) |
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Serum, no gel (RED) |
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Processing Instructions:
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For patients aged <17 years, see Testosterone (LCMS). |
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Minimum Assay Volume:
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120uL |
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Stability:
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7 days chilled; 2 months frozen |
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Transport Instructions (to testing laboratory):
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Send sample chilled. |
Testing Locations
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Performed at:
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Section
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Department
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Site
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Contact Phone
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| Core |
Biochemistry |
Fiona Stanley Hospital |
6152 8140 |
| Core |
Biochemistry |
QEII Medical Centre |
6383 4093 |
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Last Updated : 23-08-2024 15:54 |