Testosterone Free and Total

Free testosterone

Albumin, SHBG, Testosterone, Free Testosterone (Calculated)

Serum

SST

Red top, Li-heparin plasma

Separate serum or plasma from cells within 45 minutes of collection. If a red-top tube or green-top tube is used, transfer separated serum or plasma to a plastic transport tube.

0.5 mL

5 days at 20‑25 °C
7 days at 2‑8 °C
4 months at -20 ˚C

gross hemolysis; lipemia; improper labeling

Electrochemiluminescence immunoassay

0-2 Days

M-F

82040
84270
84403

Free: Males
18–69 years 35.0–155.0 pg/mL
70–89 years 30.0–135.0 pg/mL

Free For Pre-menopausal Females: 1.3-5.6 pg/mL

TESTOSTERONE, TOTAL:
Males 
0 -5 months: 75-400 ng/dL
6 months-9 years: <7-20 ng/dL
10-11 years: <7-130 ng/dL
12-13 years: <7-800 ng/dL
14 years: <7-1,200 ng/dL
15-16 years: 100-1,200 ng/dL
17-18 years: 300-1,200 ng/dL
> or =19 years: 240-950 ng/dL

Females
0-5 months: 20-80 ng/dL
6 months-9 years: <7-20 ng/dL
10-11 years: <7-44 ng/dL
12-16 years: <7-75 ng/dL
17-18 years: 20-75 ng/dL
> or =19 years: 8-60 ng/dL

 Tanner Stages*
Male
I (prepubertal): <7-20
II: 8-66
III: 26-800
IV: 85-1,200
V (young adult): 300-950

Female
I (prepubertal): <7-20
II: <7-47
III: 17-75
IV: 20-75
V (young adult): 12-60

*Puberty onset (transition from Tanner stage I to Tanner stage II) occurs for boys at a median age of 11.5 (+/-2) years and for girls at a median age of 10.5 (+/-2) years. There is evidence that it may occur up to 1 year earlier in obese girls and in African American girls. For boys, there is no definite proven relationship between puberty onset and body weight or ethnic origin. Progression through Tanner stages is variable. Tanner stage V (young adult) should be reached by age 18.

Incyte Diagnostics

1751-7, 13967-5, 2986-8, 2991-8