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Test Name: Adrenocorticotropic Hormone (ACTH), Plasma
Test Code: 004440
Other Names: N/A
Test Includes: ACTH, Plasma
Specimen Requirements: Plasma, FROZEN, 0.8 mL
Container: Plastic or siliconized glass lavender-top (EDTA) tube
Collection Instructions: ACTH SHOULD BE DRAWN BETWEEN 7 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[1,2]. Transfer the plasma into a LabCorp PP transpak frozen purple tube with screw cap (LabCorp ID 49482) immediately. Freeze immediately and maintain frozen until tested. Contact LabCorp's supply department for special tubes. To avoid delays in turnaround time when requesting multiple tests on frozen samples, PLEASE SUBMIT SEPARATE FROZEN SPECIMENS FOR EACH TEST REQUESTED.
Stability: FREEZE immediately.
Rejection Criteria / Special Instructions: Instructions for suppression/stimulation tests involving ACTH measurement can be found in the online Endocrine Appendices: ACTH Stimulation and Corticotropin-releasing Hormone Stimulation.
Methodology: Electrochemiluminescence immunoassay (ECLIA)