Test Code LAB90220 Chromogranin A, Serum
Additional Codes
CGAK
45971
Reporting Name
Chromogranin A, SUseful For
Aiding in monitoring disease progression during the course of disease and treatment in patients with gastroenteropancreatic neuroendocrine tumors (grade 1 and grade 2) when used in conjunction with other clinical methods
This test is not indicated for use as a stand-alone monitoring assay.
Performing Laboratory
Mayo Clinic Laboratories in RochesterSpecimen Type
SerumSpecimen Required
Patient Preparation: For at least 2 weeks before specimen collection, patient should stop taking proton pump inhibitor medications.
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL
Collection Information: Centrifuge and aliquot serum into plastic vial. Do not submit in original tube.
Specimen Minimum Volume
0.2 mL
Specimen Stability Information
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
Serum | Frozen (preferred) | 90 days | |
Ambient | 48 hours | ||
Refrigerated | 48 hours |
Reference Values
<93 ng/mL
Reference values apply to all ages.
Test Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
86316
LOINC Code Information
Test ID | Test Order Name | Order LOINC Value |
---|---|---|
CGAK | Chromogranin A, S | 9811-1 |
Result ID | Test Result Name | Result LOINC Value |
---|---|---|
CGAK | Chromogranin A, S | 9811-1 |
Report Available
1 to 3 daysDay(s) Performed
Monday through Saturday
Forms
If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:
-General Request (T239)
-Oncology Test Request (T729)
Method Name
Immunofluorescent Assay (IFA)