Test Details
Methodology
High-pressure liquid chromatography (HPLC)/tandem mass spectrometry (MS-MS)
Result Turnaround Time
8 - 12 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Use
Androsterone is a major metabolite of testosterone and androstenedione along with the enantiomer etiocholanolone. Androsterone is also part of the "backdoor pathway" from allopregnanolone to dihydrotestosterone, which has importance in certain disease states. Androsterone is one of a few steroids with neutral activity that interact with γ-aminobutyric acid (GABA) receptors.
Special Instructions
Limitations
Results of this test are for investigational purposes only. The performance characteristics of this assay have been determined by LabCorp. The result should not be used as a diagnostic procedure without confirmation of the diagnosis by another medically established diagnostic product or procedure.
Specimen Requirements
Specimen
Serum (preferred) or EDTA plasma, frozen
Volume
1 mL
Minimum Volume
0.4 mL (Note: This volume does not allow for repeat testing.)
Container
Red-top tube (Do not use gel-barrier tube.) or lavender-top (EDTA) tube
Collection Instructions
Centrifuge and separate serum or plasma immediately. Freeze. Send serum or plasma in a plastic transport tube
Stability Requirements
Temperature | Period |
|---|---|
Room temperature | 9 hours |
Refrigerated | 7 days |
Frozen | 7 days |
Freeze/thaw cycles | Stable x6 |
Storage Instructions
Freeze
Causes for Rejection
Sample received thawed; gross hemolysis
References
LOINC® Map
| Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
|---|---|---|---|---|---|---|
| 504005 | Androsterone, Serum, LCMS | 1856-4 | 504006 | Androsterone, Serum, LCMS | ng/dL | 1856-4 |
| Order Code | 504005 | |||||
| Order Code Name | Androsterone, Serum, LCMS | |||||
| Order Loinc | 1856-4 | |||||
| Result Code | 504006 | |||||
| Result Code Name | Androsterone, Serum, LCMS | |||||
| UofM | ng/dL | |||||
| Result LOINC | 1856-4 |