Nursing Central: Testosterone, Total

Testosterone, Total

General

Synonym/Acronym:
N/A.

Common Use:
To evaluate testosterone to assist in identification of disorders related to early puberty, late puberty, and infertility while assessing gonadal and adrenal function.

Specimen:
Serum (1 mL) collected in a red- or tiger-top tube. Plasma (1 mL) collected in green-top (heparin) tube is also acceptable.

Normal Findings:
(Method: Immunochemiluminometric assay [ICMA])

Age	Conventional Units	SI Units (Conventional Units × 0.0347)
Cord blood
Male	17–61 ng/dL	0.59–2.12 nmol/L
Female	16–44 ng/dL	0.56–1.53 nmol/L
1–5 mo
Male	1–177 ng/dL	0.03–6.14 nmol/L
Female	1–5 ng/dL	0.03–0.17 nmol/L
6–11 mo
Male	2–7 ng/dL	0.07–0.24 nmol/L
Female	2–5 ng/dL	0.07–0.17 nmol/L
1–5 yr
Male and female	0–10 ng/dL	0.00–0.35 nmol/L
6–7 yr
Male	0–20 ng/dL	0.00–0.69 nmol/L
Female	0–10 ng/dL	0.00–0.35 nmol/L
8–10 yr
Male	0–25 ng/dL	0.00–0.87 nmol/L
Female	0–30 ng/dL	0.00–1.0 nmol/L
11–12 yr
Male	0–350 ng/dL	0.00–12.1 nmol/L
Female	0–50 ng/dL	0.00–1.74 nmol/L
13–15 yr
Male	15–500 ng/dL	0.52–17.35 nmol/L
Female	0–50 ng/dL	0.00–1.74 nmol/L
Adult–older adult
Male	241–827 ng/dL	8.36–28.70 nmol/L
Female	15–70 ng/dL	0.52–2.43 nmol/L

Tanner Stage
	Male	Female
I	2–23 ng/dL	2–10 ng/dL
II	5–70 ng/dL	5–30 ng/dL
III	15–280 ng/dL	10–30 ng/dL
IV	105–545 ng/dL	15–40 ng/dL
V	265–800 ng/dL	10–40 ng/dL

Testosterone, Total has been found in Davis's Lab & Diagnostic Tests

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