Copeptin |
Ordering information: | This test has replaced Anti Diuretic Hormone (ADH)
This test is not Medicare Rebateable.
Test cost: $50
This test must be approved by the Chemical Pathologist before sending.
Sample is sent to Northern Pathology |
Laboratory: | Referred Test |
Test Code: | COPEP |
Specimen types: | Serum |
Container types: | | Serum tube with gel |  |
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Collection Instructions: | Transport specimen at Room Temperature to lab
Samples are to be centrifuged, aliquoted and frozen at -20 degrees within 24 hours of collection.
Samples to be sent frozen. |
Minimum Adult Volume: | 1 mL |
Paediatric Minimum Volume: | 1 mL |
Frequency: | Mon-Fri |
Result Turnaround Time: | 2 days |
Reference Interval: | For the investigation of diabetes insipidus (DI) and primary polydipsia (PP) in patients with confimed polyuria (>40 mL/kg/d.*
A baseline Copeptin level >21.4 pmol/L is 100% sensitive and specific for nephrogenic diabetes insipidus.
A baseline Copeptin level <2.6 pmol/L with prior fluid deprivation (>8hr) will indicate complete central DI likely
A stimulated Copeptin** >4.9 pmol/L PP likely and <4.9 pmol/L partial central DI likely (94.0% specificity and 94.4% sensitivity)
*Without concurrent diabetes mellitus, hypercalcemia, pregnancy, uncorrected thyroid or adrenal insufficieny, and heart failure; **at sodium levels >147mmol/L following water deprivation.
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Laboratory Use Only |
Accessing Results
EMR: Pathology results are available via EMR.
Auscare: If EMR is unavailable, results can be accessed through Auscare. Don’t have an Auscare login? Complete the Auscare User Form.
To access Auscare, see instructions.
Forms & Collection Guides
Consent Form – Non-Medicare Tests
For tests not covered by Medicare. Download Form
Pathology Request Form
Printable referral form for submitting pathology requests. Download Form.
Microbiology Swab Collection Guide
Step-by-step instructions for correct swab collection. Download Guide.
Preferred Order of Draw
Instructions to ensure accurate blood collection and results. View Instructions
Feedback
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