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Test Code GLP Glucagon, Plasma

Important Note

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

Additional Codes

Epic Ordering Code LAB2202
NBS code LBC00434
Service code 36745

Reporting Name

Glucagon, P

Specimen Type

Plasma EDTA


Specimen Required


Patient Preparation:

Fasting: 8 hours, required

Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube: Lavender top (EDTA)

Submission Container/Tube: Plastic vial

Specimen Volume: 2 mL Plasma

Collection Instructions:

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


National University Hospital-Singapore Note:

NUH Outreach Laboratories:
Specimen Requirements
Submit the following:
Container: Pre-chilled Purple Top
Fasting: 8 hours, required
Draw blood into a pre-chilled Purple Top tube
Processing Requirements
Centrifuge cold and aliquot plasma into a Mayo plastic tube. Freeze immediately.
Specimen type: Plasma
Volume: 2 mL
Storage/transport requirements: Frozen

Forms

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

Specimen Minimum Volume

Plasma: 0.45 mL

Specimen Stability Information

Specimen Type Temperature Time
Plasma EDTA Frozen 90 days

Reject Due To

Gross hemolysis Reject
Gross lipemia Reject
Gross icterus Reject

Method Name

Enzyme-Linked Immunosorbent Assay (ELISA)

Day(s) Performed

Tuesday, Friday

Report Available

3 to 7 days
National University Hospital-Singapore Note:

Please note that this is a referral test requiring transport to the external testing facility and an additional 3-5 days is required.

Reference Values

<1 year: Not established

≥1 year: ≤159 pg/mL

 

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

Performing Laboratory

Mayo Clinic Laboratories in Rochester

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)

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

Secondary ID

9358

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.
National University Hospital-Singapore Additional Information:

Last updated 27/07/2026