General Information

UPHSM LIS Test #: 027160
Testing Time: 1-2 Days
Testing Lab: Labcorp

Specimen Info
Only 1 specimen type required, unless otherwise specified

Volume: 0.8 (0.3) mL
Temperature: Frozen
Tube Type: Plastic or siliconized glass lavender-top (EDTA) tube
Collection Info:
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. Transfer the plasma into a transport tube with screw cap  immediately. Freeze immediately and maintain frozen until tested.  To avoid delays in turnaround time when  requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.
Storage Instructions:  Freeze immediately.  CRITICAL FROZEN

Specimen Acceptability

When requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested


Electrochemiluminescence immunoassay (ECLIA)

Clinical Utilities

Use:  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)

CPT Codes


* The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding
is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

Reference Range

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