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Vasopressin, arginine vasopressin hormone, ADH.
To evaluate disorders that affect urine concentration related to fluctuations of ADH secretion, such as diabetes insipidus.
Plasma collected in a lavender-top (EDTA) tube.
|Age||Antidiuretic Hormone*||SI Units (Conventional Units × 0.923)|
|Neonates||Less than 1.5 pg/mL||Less than 1.4 pmol/L|
|1 day–18 yr (normally hydrated)||0.5–1.7 pg/mL||Less than 0.5–1.6 pmol/L|
|Adult (normally hydrated)||1–5 pg/mL||0.9–4.6 pmol/L|
This test should be ordered and interpreted with results of a serum osmolality.
|Serum Osmolality*||Antidiuretic Hormone||SI Units (Conventional Units × 0.923)|
|270–280 mOsm/kg||Less than 1.5 pg/mL||Less than 1.4 pmol/L|
|280–285 mOsm/kg||Less than 2.5 pg/mL||Less than 2.3 pmol/L|
|285–290 mOsm/kg||1–5 pg/mL||0.9–4.6 pmol/L|
|290–295 mOsm/kg||2–7 pg/mL||1.8–6.5 pmol/L|
|295–300 mOsm/kg||4–12 pg/mL||3.7–11.1 pmol/L|