vasopressin in plasma

Indications

• diagnosis & characterization of diabetes insipidus
• diagnosis of water intoxication
• adjunct in the diagnosis of SIADH

Reference interval

• adults: <1.7 pg/mL

* level default is antigen level not activity level

* there does not seem to be a test that directly measures vasopressin activity

Decreases

• central diabetes insidipus

Methods

• radioimmunoassay

Specimen

• draw specimen after 6 hours without food or water
• lavender top
• minimum volume: 1.2 mL

More general terms

• vasopressin in body fluid

More specific terms

• provasopressin.C-terminal in serum/plasma

Additional terms

• vasopressin (antidiuretic hormone, ADH)