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Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog
GLUCAGON |
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ORDERING INFORMATION: |
Geisinger Epic Procedure Code: LAB2358 Geisinger Epic ID: 6684 | |
SPECIMEN COLLECTION |
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Specimen type: |
Plasma | |
Preferred collection container: |
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Alternate Collection Container: |
3 mL lavender-top (K2 EDTA) tube
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Specimen required: |
2 mL aliquot of plasma; minimum 0.5 mL. Please submit a separate frozen aliquot for this test. It may not be combined with any other test requiring a frozen aliquot. | |
Patient preparation: |
Patient must be fasting. | |
| SPECIMEN PROCESSING |
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Specimen processing instructions: |
Centrifuge at 3000 rpm immediately after collection. Aliquot and freeze immediately. | |
Transport temperature: |
Frozen. | |
Specimen stability: |
Room temperature: Unacceptable. Refrigerated: 2 hours. Frozen: 28 days. | |
Rejection criteria: |
Samples received room temperature or refrigerated. Gross hemolysis. | |
TEST DETAILS |
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CPT code(s): |
82943 | |
| Note: The billing party has sole responsibility for CPT coding. Any questions regarding coding should be directed to the payer being billed. The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only. | ||
Methodology: |
Enzyme-Linked Immunosorbent Assay (ELISA) |
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Synonyms: |
Quest test code 519, GLUCA
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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. | |