3 - 9 days
Looking to order a test?
We’ve provided helpful links to make ordering easy.Find a Requisition
All specimens should be accompanied by a requisition.Submitting Specimens
Learn about how to properly label and where to ship specimens.Order Kits and Supplies
MLabs provides all the supplies necessary for the collection of specimens.Test FAQ
Visit our provider FAQ and learn about common questions to ordering tests.
Liquid Chromatography-Tandem Mass Spectometry (LC-MS/MS)
Diagnostic workup of patients with congenital adrenal hyperplasia; Part of metyrapone testing in the workup of suspected secondary or tertiary adrenal insufficiency; Part of metyrapone testing in the differential diagnostic workup of Cushing syndrome.
< or =18 years: <344 ng/dL, >18 years: 10-79 ng/dL.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Collect specimen in a red top or SST tube. Centrifuge, aliquot serum into plastic vial and refrigerate. Morning (8 a.m.) specimens are recommended. Indicate time of collection and whether specimen was collected pre- or post- metyrapone.