Chromogranin - A

Last Modified: 2/13/2019 3:29:55 PM

Medical Necessity Documentation:  
Client Notes:  
Patient Preparation:  
Specimen Requirements: 1.0 Serum from a Red Top Tube in a Plastic Vial
Collection Instructions: Centrifuge and transfer into plastic vial
Minimum Volume: 0.5 mL Serum
Transport & Storage: Temperature/Stability: 7 days Ambient
7 days Refrigerated
14 days Frozen
Rejection Criteria: Moderate to gross hemolysis • Moderate to grossly lipemic • Icteric
Reference Range:

25-140 ng/mL

Critical Ranges:  
Test Comments:  Treatment with proton-pump inhibitors or H2-receptor blockers will cause an increase in Chromogranin A concentrations.
Methodology: Electrochemiluminescence (ECLIA)
Clinical Significance:

Chromogranin A (CgA) is used as an adjunct in the diagnosis of carcinoid tumors. Measurements of CgA are also used to assess disease progression, response to therapy, or recurrence after surgical resection.

Custom Panel: No


Turn Around Time: 2 to 4 days
Days Performed: Sunday, Monday, Tuesday, Wednesday, Thursday, Friday
Sites Performed: Quest - Chantilly to San Juan Capistrano
PHL Test Code: CHRA1
EPIC Test Code: IMO95
Send Out Test Code: 16379
Alternate Test Names: CgA; Chromogranin-A
Included Tests:  
CPT Coding: 86316

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