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Test Code GCG Glucagon, Plasma

Additional Codes

Epic Order Name: GLUCAGON (AKA GCG)
Sunquest Order Code: GCG
Epic Px Code: LAB2254

Reporting Name

Glucagon, P

Useful For

Diagnosis and follow-up of glucagonomas and other glucagon-producing tumors

 

Assessing diabetic patients with problematic hyper- or hypoglycemic episodes (extremely limited utility)

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Plasma EDTA


Specimen Required


Patient Preparation: Patient should fast for 8 hours before specimen collection.

Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube: Lavender top (EDTA)

Submission Container/Tube: Plastic vial

Specimen Volume: 2 mL

Collection Instructions:

1. Pre-chill lavender top (EDTA) tube at 4° C before drawing the specimen.

2. Draw blood into the pre-chilled tube and process as follows:

 a. Chill filled tube in wet ice for 10 minutes.

 b. Centrifuge in a refrigerated centrifuge or in a pre-chilled centrifuge carrier.

 c. Immediately after centrifugation, aliquot plasma into a plastic vial and freeze.


Specimen Minimum Volume

0.45 mL

Specimen Stability Information

Specimen Type Temperature Time
Plasma EDTA Frozen 90 days

Reference Values

≥1 year of age: ≤159 pg/mL

<1 year of age: No reference interval established.

 

For International System of Units (SI) for Reference Values, see www.mayocliniclabs.com/order-tests/si-unit-conversion.html.

Day(s) Performed

Tuesday, Friday

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

82943

LOINC Code Information

Test ID Test Order Name Order LOINC Value
GLP Glucagon, P 2338-2

 

Result ID Test Result Name Result LOINC Value
9358 Glucagon, P 2338-2

Report Available

3 to 7 days

Reject Due To

Gross hemolysis Reject
Gross lipemia Reject
Gross icterus Reject

Method Name

Enzyme-Linked Immunosorbent Assay (ELISA)

Forms

If not ordering electronically, complete, print, and send an Oncology Test Request (T729) with the specimen.

Secondary ID

9358