Test Overview
Test Methodology
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Test Usage
An ancillary test for congenital adrenal hyperplasia, particularly in situations in which a diagnosis of 21-hydroxylase and 11-hydroxylase deficiency have been ruled out and for confirming a diagnosis of 3-b-hydroxydehydrogenase (3-b-HSD) deficiency and 17-alphahydroxylase deficiency.
Reference Range *
Age and sex specific reference ranges provided with report.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Test Details
Days Set Up
Monday, Wednesday, Friday
Analytic Time
3 - 7 days
Soft Order Code
PREGN
MiChart Code
Pregnenolone
Synonyms
- PREGNEN
- Pregnenalone
Laboratory
Sendout
Reference Laboratory
Mayo PREGN (88645)
Section
Special Testing
Specimen Requirements
Collection Instructions
Collect specimen in a red top or SST tube. Centrifuge, aliquot serum into a plastic vial and freeze.
Special Handling
Strict frozen
Normal Volume
1.0 mL serum
Minimum Volume
0.5 mL serum
Storage Temperature
Strict frozen
Additional Information
Test sent to Mayo Clinic Laboratories.
Billing
CPT Code
84140
Fee Code
20441
LOINC
2837-3