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HelpTest Code GLP Glucagon, Plasma
Additional Codes
Laboratory Code : LAB2202
NUH Service Code : 36745
Reporting Name
Glucagon, PUseful 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 EDTASpecimen 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.
Specimen Minimum Volume
Plasma: 0.45 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Plasma EDTA | Frozen | 90 days |
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.
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 daysPlease note that the reported Turnaround Time (TAT) excludes transit times from Singapore to Mayo, which averages approximately 3 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
9358Updated on 08/12/2025