Days Set Up
Monday - Saturday
Analytic Time

1 - 3 days

MiChart Code
CGAK
Soft Order Code
CGAK

Test Updated:

Synonyms

CHROMOA
Chromogranin A
CGAK
Chromogranin A, Serum

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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

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Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

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Test Overview

Test Methodology

Homogeneous Time-Resolved Fluorescence

Test Usage

Follow-up or surveillance or to aid in the diagnosis of carcinoid tumors. To aid in the diagnosis of other neuroendocrine tumors, including pheochromocytomas, medullary thyroid carcinomas (MTC), functioning and nonfunctioning islet cell and gastrointestinal amine precursor uptake and decarboxylation (APUD) tumors, and pituitary adenomas.

Reference Range

< 93 ng/mL

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Offsite

Proton pump inhibitor drugs should be discontinued for at least 2 weeks prior to specimen collection. Collect specimen in a red top or SST tube. Centrifuge, aliquot serum into a plastic vial and freeze.

Yellow Top Tube
Normal Volume
0.5 mL serum
Minimum Volume
0.2 mL serum

Billing Information

CPT Code
86316
Pro Fee Code
 
LOINC
30169-7

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.

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