Testosterone, Free

General Information

Lab Name
Testosterone, Free
Lab Code
RTSTF
Components

Interpretation

Reference Range
Units: ng/dL
Female Male
AgeRange AgeRange
1y-5y<0.13 1y-8y<0.13
6y<0.14 9y0.00-0.45
7y0.00-0.23 10y0.00-1.26
8y0.00-0.34 11y0.00-5.52
9y0.00-0.46 12y0.00-9.28
10y0.00-0.59 13y0.00-12.6
11y0.00-0.72 14y0.48-15.3
12y0.00-0.84 15y1.62-17.7
13y0.00-0.96 16y2.93-19.5
14y0.00-1.06 17y-4.28-20.9
15y-0.00-1.09 NoneNone

Effective date: 06/30/2022

Ref. Range Notes

Reference Ranges (Infants <1 year):

  • Males: 1 to 15 days: 0.20-3.10 ng/dL*
  • Females: 1 to 15 days: <0.13-0.25 ng/dL*
  • Males/Females, 16 days to 1 year: Values decrease gradually from newborn to prepubertal levels.

*Citation: J Clin Endocrinol Metab, 1973;36(6):1132-1142

Ordering & Collection

Specimen Type

Processing

Receiving Instructions
Misc Sendout

Performance

Lab Department
Sendouts Mayo Lab (RF)(MARF)
Frequency
Available STAT?
Performing Location(s)

Billing & Coding

LOINC
2991-8
Interfaced Result Code
UOW1711