Cortisol is increased in Cushing's Disease and decreased in Addison's Disease (adrenal insufficiency).
Assay is not recommended when patient is receiving prednisone/prednisolone therapy due to cross reactivity with the antibody used in this assay
1 mL serum
Collect specimen between 7-9 a.m. Indicate the collection time on the specimen container and test requisition.
Serum Separator Tube (SST®)
Room temperature: 48 hoursRefrigerated: 7 daysFrozen: 28 days
Set up: Tues-Sat (Day shift, cutoff 9 a.m.); Report available: 3 days