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Labcorp Oklahoma, Inc.
Test Directory


Antidiuretic Hormone (ADH, Arginine Vasopressin, AVP)

Order Name ADH/VAS
Test Number: 3600225
Revision Date 03/28/2024
Test Name Methodology LOINC Code
Antidiuretic Hormone (ADH, Arginine Vasopressin, AVP)
Radioimmunoassay 3126-0 
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 2 mL (2 mL ) Plasma EDTA (Lavender Top) Frozen
Alternate 1 2 mL (2 mL ) Plasma EDTA (Pink top) Frozen
Instructions Specimen Collection: Collect TWO Lavender-top (EDTA) tubes or One full Pink EDTA to ensure 2mL of plasma for testing.
Specimen Storage: Freeze
Specimen Collection: Centrifuge in a refrigerated centrifuge, separate plasma, and FREEZE IMMEDIATELY. Transfer specimen to plastic transport before freezing. To avoid delays in turnaround time when reqested multiple test on frozen samples, PLEASE SUBMIT SEPARATE FROZEN SPECIMENS FOR EACH TEST REQUESTED.
Cause for Rejection: Recently administered isotopes; plasma specimen not received frozen
Specimen Stability: Ambient: Not Available, Refrigerated : Not Available, Frozen: Not Available
Expected TAT 6 - 12 days  
Clinical Use Antidiuretic Hormone (also called ADH or Vasopressin) regulates water reabsorption in the kidney, reducing diuresis and increasing blood volume and pressure. The syndrome of inappropriate release of ADH has been labeled SIADH, occurring with neoplasia, pulmonary disorders (e.g., pneumonia and tuberculosis), CNS disorders, and with specific drugs. 
Performing Labcorp Test Code 010447 
CPT Code(s) 84588
Lab Section Reference Lab