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Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog
COPEPTIN |
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ORDERING INFORMATION: |
Geisinger Epic Procedure Code: LAB2075 Geisinger Epic ID: 49242 | |
SPECIMEN COLLECTION |
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Specimen type: |
Serum or plasma | |
Preferred collection container: |
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Alternate Collection Container: |
4 mL green/green-top (sodium heparin) tube
3 mL lavender-top (K2 EDTA) tube
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Specimen required: |
1 mL serum; minimum 0.5 mL. | |
| SPECIMEN PROCESSING |
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Transport temperature: |
Frozen. | |
Specimen stability: |
Room temperature: 24 hours. Refrigerated: 3 days. Frozen: 28 days. | |
Rejection criteria: |
Specimen received at room temperature. Gross hemolysis. | |
TEST DETAILS |
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CPT code(s): |
86255 | |
| 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: |
Immunofluorescence Assay |
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Synonyms: |
Quest test code 37740, C-Terminal pro-vasopressin, CT-proAVP, ADH, Antidiuretic hormone COPEP
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Clinical significance: |
The Copeptin test is used in the diagnosis of central diabetes insipidus and in the differential diagnosis of central or nephrogenic diabetes insipidus. It is also known as “proAVP”. Since Copeptin is more stable than AVP, it is thought to be a better marker than arginine vasopressin (AVP). | |