Test Overview
Test Methodology

Immunofluorescent Assay (IFA)

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.

Test Details
Days Set Up
Monday - Saturday
Analytic Time

1 - 3 days

Soft Order Code
CGAK
MiChart Code
CGAK
Synonyms
    Laboratory
    Sendout
    Reference Laboratory
    Mayo CGAK (34641)
    Section
    Special Testing
    Specimen Requirements
    Collection Instructions

    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.

    Normal Volume

    0.5 mL serum

    Minimum Volume

    0.2 mL serum

    Storage Temperature
    Frozen preferred (ambient or refrigerated only good 48 hrs)
    Additional Information

    Test sent to Mayo Clinic Laboratories.

    Billing
    CPT Code
    86316
    Fee Code
    20491
    LOINC
    30169-7
    NY State Approved
    No