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Pregnenolone

Test Codes

EPIC: LAB6135, Beaker: XPRGN, Mayo: PREGN

Department

Send Outs

Specimen Collection Criteria

Collect (preferred specimen): One Gold-top SST tube.

Also acceptable: One plain Red-top tube.

Physician Office/Draw Specimen Preparation

Critical frozen. Maintain frozen (-20°C/-4°F or below) prior to transport.  Let specimen clot 30-60 minutes then centrifuge to separate serum from cells within two hours of collection. Transfer serum to a plastic transport tube and freeze (-20°C/-4°F or below) immediately.

Preparation for Courier Transport

Transport: 1.0 mL serum, frozen (-20°C/-4°F or below). (Minimum: 0.5 mL)

Rejection Criteria

Specimens not collected and processed as indicated.

In-Lab Processing

Critical frozen.

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells within one hour of collection. Transfer serum to a plastic transport tube and freeze (-20°C/-4°F or below) immediately.

Transport: 1.0 mL serum, frozen (-20°C/-4°F or below). (Minimum: 0.5 mL)

Storage

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): Unacceptable
Refrigerated (2-8°C or 36-46°F): Unacceptable
Frozen (-20°C/-4°F or below): 28 days

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Send Outs Laboratory with any questions.

Laboratory

Sent to Mayo Clinic Laboratories in Rochester, MN.

Performed

Monday, Tuesday, Thursday.
Results are available in 3-7 days.

Reference Range

By report.

Test Methodology

Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS).

CPT Codes

84140

Contacts

Last Updated

10/8/2023