Glucagon Blood 519

Test Code

Alias/See Also

CPT Codes

Preferred Specimen
2 mL plasma collected in an EDTA (lavender-top) tube

Patient Preparation
Overnight fasting is required

Minimum Volume

Fasting specimen required. Draw EDTA (LAV) send plasma Froz

Transport Container

Transport Temperature

Specimen Stability
Room temperature: Unacceptable
Refrigerated: 2 hours
Frozen -20°C: 24 hours
Frozen -70°C: 28 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Samples received refrigerated • Gross hemolysis

Enzyme Linked Immunosorbent Immunoassay (ELISA)

FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Setup Schedule
Set up: Mon; Report available: 7-14 days

Reference Range
8-57 pg/mL

Clinical Significance
The glucagon assay is useful primarily when considering a glucagon-secreting tumor of the pancreas. Glucagonomas cause an unusual but characteristic syndrome consisting of a rash, mild diabetes, weight loss and hypoamninoacidemia. Measurement of plasma glucagon confirms the diagnosis; glucagon levels are very high in the setting of glucagonoma.

Performing Laboratory
Quest Diagnostics Nichols Inst San Juan Capistrano
33608 Ortega Highway
San Juan Capistrano, CA 92690-6130

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.