Testosterone (Adult Females, Children, or Individuals on Testosterone-Suppressing Hormone Therapy)
Also known as: TESTOS MAS
Use
This mass spectrometry test is used to measure a wide range of testosterone concentrations. It is particularly useful when low concentrations are expected, regardless of the patient's sex assigned at birth. It can also be used to monitor testosterone-suppressing hormone therapies, such as antiandrogens or estrogens. Free or bioavailable testosterone measurements may provide supportive information, but this test specifically measures total testosterone levels.
Special Instructions
Specimen should be collected between 6-10 a.m. to ensure accurate measurement of testosterone levels due to its diurnal variation. It is important to separate serum or plasma from cells as soon as possible and within 2 hours of collection to maintain sample integrity.
Limitations
This test is developed and performance characteristics have been determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. The results should be interpreted with regard to the clinical context and are intended for use within a CLIA certified laboratory setting. Users should refer to cisgender female reference intervals for individuals on testosterone-suppressing hormone therapies.
New York Approved
Methodology
Mass Spectrometry
Biomarkers
LOINC Codes
- 2986-8
Result Turnaround Time
1-5 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
1 mL
Minimum Volume
0.2 mL
Container
ARUP standard transport tube
Collection Instructions
Separate serum or plasma from cells ASAP or within 2 hours of collection. Collect between 6-10 a.m.
Storage Instructions
Refrigerated
Causes for Rejection
EDTA plasma
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 24 hours |
| Refrigerated | 1 week |
| Frozen | 6 months |