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Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog
CHROMOGRANIN A |
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ORDERING INFORMATION: |
Geisinger Epic Procedure Code: LAB2001 Geisinger Epic ID: 55722 | |
SPECIMEN COLLECTION |
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Specimen type: |
Serum | |
Preferred collection container: |
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Specimen required: |
1 mL (0.5 mL minimum) serum collected in a red-top tube (no gel) | |
Special notes: |
***SST unacceptable.*** | |
| SPECIMEN PROCESSING |
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Specimen processing instructions: |
Centrifuge and separate from cells. Aliquot and freeze. | |
Transport temperature: |
Frozen. | |
Specimen stability: |
Room temperature: 7 days. Refrigerated: Unacceptable. Frozen: 31 days. | |
Rejection criteria: |
No-gel tubes. Serum separator tubes unacceptable. Specimens received refrigerated. Moderate to gross hemolysis, moderately to grossly lipemic, icteric. | |
TEST DETAILS |
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CPT code(s): |
86316 | |
| Note: The billing party has sole responsibility for CPT coding. Any questions regarding coding should be directed to the payer being billed. The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only. | ||
Methodology: |
Chromatography/Mass Spectrometry |
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Synonyms: |
CgA, Quest code 31911 CHRMNA
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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. | |