Pregnenolone

Test ID: Z0850

CPT code: 84140
LOINC: 2837-3
Specimen Type: Red, SST, Lav (EDTA) or green-top (heparin)
Frequency: 7 – 10 days
Instructions: 2.5 mL Serum or Plasma from Red, SST, Lav (EDTA) or green-top (heparin), Frozen, Separate within 1 hour. Min 1.1 mL.
Text: Pregnenolone levels remain in the normal range in patients with Cushing syndrome & hyperaldosteronism. Levels can be suppressed with dexamethasone inhibition and increased with exogenous ACTH stimulation. Pregnenolone levels have been shown to be elevated in patients with idiopathic hirsutism.
Methodology: High-pressure liquid chromatography (HPLC) tandem mass spectrometry.

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