Laboratory Test Information Guide

Details for Glucagon, Plasma

Test Name: Glucagon, Plasma
Alternate Name(s):  
Laboratory: Core
Specimen Type: Adult:
4 mL Lavender top Vacutainer tube

0-2 years: 2-3 x 0.5 mL Lavender top Microtainers
2-10 years: 3 mL Lavender top Vacutainer tube
Collection Information: Collect fasting specimen. Pre-chill tube at 4C before drawing the specimen. Draw into the pre-chilled tube, and then chill tube in wet ice for 10 minutes. Centrifuge in a refrigerated centrifuge or in chilled centrifuge cup. Immediately after centrifugation, remove plasma, place in a plastic transport vial and freeze.

The minimum volume required is 0.45 mL.

Note: This test is approved for Dr. Stan Van Uum. All other physicians requesting this test will require biochemist approval.
Test Schedule: Referred out Monday-Thursday
Turnaround time from when specimen
is received in testing laboratory:
10 days
Reference Range: < or =6 hours: 100-650 pg/mL
1-2 days: 70-450 pg/mL
2-4 days: 100-650 pg/mL
4-14 days: declining gradually to adult levels
>14 days: < or =80 pg/mL (range based on 95% confidence limits)
Effective Date: 2014-07-14
Revised Date: 2020-06-22
Critical Value:  
Interpretive Comments: Glucagon levels are inversely related to blood glucose levels at all ages. This is particularly pronounced at birth and shortly thereafter, until regular feeding patterns are established. This explains the higher levels immediately after birth, which then first fall as the glucagon release mobilizes the infant's glucose stores, then rise again as stores are depleted, finally normalizing towards adult levels as regular feeding patterns are established.
Special Processing: Separate plasma and freeze as soon as possible.
Method of Analysis: Immunoassay following extraction
Critical Information Required:  
Storage & Shipment: Store and ship plasma frozen.
Stability: Frozen 90 Days
System Codes: 
Referred To: In-Common Laboratories

Questions? Comments? Contact Laura Gopaul