Interpretation of the result of testosterone level in men
What is Testosterone?
A sexual hormone secreted by testicles stimulates secondary sexual characteristics such as penis enlargement, body hair growth, sperm formation, and degeneration.
Main Health Issues by Testosterone
The abnormality of testosterone in each category may cuase the following health issues:
Category | Problems |
Male | Erectile dysfunction and infertility |
Female | Virilization, infertility, polycystic ovary syndrome |
Infant | Ambiguous genitalia, precociousness, delayed puberty |
Sex hormone production in men during the life time
The testosterone level decreases throughout the entire life. In particular, man's testosterone maximizes in their 20s and start to decreases during the rest of his life. The remarkable decrease of testosterone happens in his 40s.
Other than the natural testosterone level decrease, there are several factors may lead to the cause of low testosterone level. (Hypothalamus disease, trauma or injury with low blood flow, cancer treatment, treatment with steroids, alcohol abuse, kidney disease, HIV/AIDS, etc.)
What is the normal reference range for testosterone?
The clinical judgement should not be established on a single test, but hsould be determined in conjuction with the cooperation of thealth professionals.
Category | Normal Reference Range |
Testosterone | (M) Prepubertal 0.01 - 1.77 ng/mL (M) Pubertal 0.02 - 8.90 ng/mL (M) Adult 2.80 - 11.00 ng/mL (F) Prepubertal 0.01 - 0.20 ng/mL (F) Pubertal 0.02 - 0.40 ng/mL (F) Adult 0.15 - 0.70 ng/mL |
Reference
[FREND System]
Rapid quantitative immunoassay analyzer
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