Testosterone is a male sex hormone or androgen. It is generally low in women and children, but it can be elevated in certain diseases. A certain level of testosterone is important for development and maturation in both genders. Testosterone is produced in the testes and to a lesser degree in the ovaries. Testosterone (Female/Child) measures total testosterone in the blood. It is expressed as ng/dL. Testosterone levels in young males tend to be about 50% higher in the early morning than in the evening. Androgen status should be assessed on more than one occasion with more than one measurement.
Normal Ranges for total testosterone in women and children:
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
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
Sources:
https://www.labcorp.com/test-menu/25691/free-androgen-index-fai
https://www.labcorp.com/test-menu/35496/testosterone-free-direct
https://www.mayomedicallaboratories.com/test-catalog/Clinical+and+Interpretive/8533
https://www.uptodate.com/contents/overview-of-androgen-deficiency-and-therapy-in-women
Testosterone (Female/Child)
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