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Testosterone
minimum sample volume required ~ 5ml
Test Code: TES
Tube type: SST
Other acceptable tube types
Lithium heparin (pale green)
Special instructions
Reference ranges
Females:
<1 year of age: <2.2
1 - 8 years of age: <0.7
9 - 11 years of age: <1.7
14+ years of age: <2.7
Males:
<1 year of age: <10
1 - 8 years of age: <0.7
9 - 12 years of age: <1.7
13 - 17 years of age: <20 (pubertal stage dependent)
18+ years of age: 6 - 27
Reference range
Please see above
Units
nmol/L
Turnaround Time
2
days
Department: Biochemistry
Clinical Application
Used in men in assessment of fertility, erectile dysfunction and response to treatment for prostatic cancer.
In women used in assessment of hirsutism, PCOS and monitoring of replacement therapy in post-menopausal women.
Used as part of hCG stimulation test in investigation of ambiguous genitalia in infants, and in the assessment of delayed puberty.
Test limitations: In isolated cases, elevated testosterone levels can be seen in samples from female patients with end stage renal disease (ESRD).
Webpage updated: January 2026.
Links:
» BSW guidance for the off-label use of topical testosterone in women on HRT
