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Copeptin
Test Code12661
Preferred Specimen
1 mL Serum
Minimum Volume
0.5 mL Serum
Other Acceptable Specimens
1 mL Plasma
Transport Container
Serum
__Red-top (no gel) (preferred)
__SST (red-top)
Plasma
__EDTA (lavender-top)
__Sodium heparin (green-top)
__Red-top (no gel) (preferred)
__SST (red-top)
Plasma
__EDTA (lavender-top)
__Sodium heparin (green-top)
Transport Temperature
Serum and Plasma: Frozen preferred; Room temperature
_unacceptable; Refrigerated acceptable
_unacceptable; Refrigerated acceptable
Specimen Stability
Serum or Plasma
__Room temperature: 24 Hours
__Refrigerated: 72 Hours
__Frozen: 28 Days
__Room temperature: 24 Hours
__Refrigerated: 72 Hours
__Frozen: 28 Days
Methodology
Immunofluorescence Assay
Setup Schedule
Night Sets up 3 days a week.
Report Available
Reports in 3 to 5 days.
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 a reliable
surrogate marker for arginine vasopressin (AVP).
diabetes insipidus and in the differential diagnosis of
central or nephrogenic diabetes insipidus. It is a reliable
surrogate marker for arginine vasopressin (AVP).