Casandra
Casandra Test Code AR12418Version 1 (DRAFT)
Performing Lab
Arginine Vasopressin Hormone
Also known as: AVH PLASMA
Clinical Use
Order TestUse
Aid in the diagnosis of disorders of water balance such as diabetes insipidus, syndrome of inappropriate antidiuretic hormone (SIADH), psychogenic water intoxication, and ectopic antidiuretic hormone production.
Special Instructions
Change effective as of 04/21/25: this test has been replaced by Copeptin proAVP, Plasma (test code 3018705).
Limitations
Not provided.
Test Details
Methodology
Immunoassay (Radioimmunoassay)
Biomarkers
Arginine vasopressin (ADH)
AnalyteQuantitation • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
Result Turnaround Time
3-11 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Plasma
Volume
6 mL (min: 2.5 mL)
Minimum Volume
2.5 mL
Container
Lavender (EDTA) or pink (K2EDTA) tube
Collection Instructions
Separate plasma from cells ASAP or within 2 hours of collection; transfer to ARUP Standard Transport Tube and freeze immediately.
Storage Instructions
Freeze immediately; critical frozen; separate specimens for multiple tests.
Causes for Rejection
Non-frozen specimens