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CORTISOL
MessageImmediate Specimen Processing: Ambulatory Collections: Do not send original SST collection tube due to the short stability of the specimen on gel. Aliquot serum/plasma into a plastic screw-cap transport vial. Ambulatory Transport Temperature to Inova Central Lab: Refrigerated Specimen Stability: 14 days
Test Code
LAB61 CORT
Alias/See Also
CORT
CPT Codes
82533
Includes
Baseline samples should be collected between 6 a.m. and 10 a.m. and at least 30 minutes prior to ACTH injection. Injection should be administered no loater than noon, and then 30-minute and 60-minute post injection samples should be collected.If cortisol stimulation testing is scheduled later in the day, baseline must be collected 30 minutes prior to injection.
Instructions
Processing Instructions: Do not send original SST collection tube due to short stability of specimen.Centrifuge and separate cells after clot formation and within 8 hours of collection. Remove serum if testing will be delayed more than 8 hours Minimum Testing Volume: 0.3mL Serum or Plasma Transport Temperature: Refrigerated Stability: Ambient: N/A Refrigerated (ON GEL): 8 hoursRefrigerated (OFF GEL): 14 daysFrozen: 1 month Causes for Rejection: Samples stored on gel >8 hours, unlabeled, mislabeled, wrong tube type, hemolyzed, QNS, exceeds specimen stability requirements, cadaver specimens.
Clinical Significance
1230130037
Last Updated: May 18, 2026