Turnaround Time: 8 - 12 days
CPT Code:


Test Type: 1 mL Serum (preferred) or EDTA plasma, frozen
Stability Time:



Room temperature

9 hours


7 days


7 days

Freeze/thaw cycles

Stable x6


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 ?-aminobutyric acid (GABA) receptors.

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.

Kaminski RM, Marini H, Kim WJ, Rogawski MA. Anticonvulsant activity of androsterone and etiocholanolone. Epilepsia. 2005 Jun; 46(6):819-827. PubMed 15946323

Collection Details:

Collection Instructions:

Red-top tube (Do not use gel-barrier tube.) or lavender-top (EDTA) tube.

Centrifuge and separate serum or plasma immediately. Freeze. Send serum or plasma in a plastic transport tube.