Specimen Requirements
Title
TESTOSTERONE, TOTAL
Specimen Requirement
1 SST/1.0 mL serum. After 30 minutes of clotting, promptly centrifuge and refrigerate.
Methodology
Stability
Refrigerated: 1 week; Frozen: 6 months
Reference Range
By Report
Turnaround
1 day
Clinical Use
Clinical evaluation of serum testosterone, along with serum LH, assists in evaluation of hypogonadal males. Major causes of lowered testosterone in males include hypogonadotropic hypogonadism, testicular failure, hyperprolactinemia, hypopituitarism, some types of liver and kidney diseases, and critical illness. Increased serum testosterone levels in females may be indicative of polycystic ovary syndrome and adrenal hyperplasia, among other contitions. The clinical manifestations of excess testosterone include infertility, hirsutism, amenorrhea and obesity.
Test Code
TEST