Adrenocorticotropic Hormone (ACTH), Plasma

Additional Information:

EPIC Order Code: LAB4508

CPT Code(s):

82024 (per specimen)

Collection Procedure:

Specimen: Plasma, frozen

Volume: 0.8 mL

Minimum Volume: 0.3 mL (Note: This volume does not allow for repeat testing.)

Container: Plastic or siliconized glass lavender-top (EDTA) tube

Collection: ACTH should be drawn between 7 AM and 10 AM.

Collect into iced plastic or siliconized glass lavender-top (EDTA) tube, noting time of collection. After venipuncture, immediately immerse the tubes in an ice bath. Separate plasma from cells by centrifugation within one hour after venipuncture.

Storage Instructions: Freeze immediately.


Pituitary function test useful in the differential diagnosis of Cushing syndrome, ectopic ACTH syndrome (eg, carcinoma of lung, islet cell tumors, carcinoid tumors, medullary carcinoma of thyroid), Addison disease, hypopituitarism, and ACTH-producing pituitary tumors (eg, Nelson syndrome)


Electrochemiluminescence immunoassay (ECLIA)


1-2 days

Reference Values:

7.2−63.3 pg/mL (Note: For samples collected between 7 AM and 10 AM)