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Test Code BLOD0606 Testosterone, Total, Serum

Useful For

  • Evaluation of men with symptoms or signs of possible hypogonadism, such as loss of libido, erectile dysfunction, gynecomastia, osteoporosis, or infertility
  • Evaluation of boys with delayed or precocious puberty
  • Monitoring testosterone replacement therapy
  • Evaluation of women with hirsutism, virilization, and oligoamenorrhea
  • Evaluation of women with symptoms or signs of possible testosterone deficiency



Performing Laboratory

Bozeman Health Laboratory Services

Specimen Requirements

Specimen Type: Serum
Container/Tube: Red top or gold top
Specimen Volume: 2 mL
Specimen Minimum Volume: 1 mL

Collection Instructions: If there is a delay in transport of >8 hours, refrigerate specimen, and send specimen refrigerated.


Specimen Rejection:

1. Specimen other than serum

2. Unfrozen specimen >48 hours old

Specimen Transport Temperature

Ambient <8 hours/Refrigerated >8 hours/Frozen >48 hours

Specimen Stability


Specimen Type Temperature Time
Serum Ambient 8 hours
  Refrigerated 48 hours
  Frozen 1 month


Reference Values

Males <50 yrs old: 123-814 ng/dL

Males >50 yrs old:   87-780 ng/dL

Females: 9-48 ng/dL

Day(s) Test Set Up

Monday through Friday

Test Classification and CPT Coding