Lab reference

BUN

Renal

For education. Check every result.

Anatium is a study resource, not medical advice. Nothing here is a diagnosis, a prescription or a substitute for a clinician who has seen the patient. Check every number against a current local protocol before it touches anyone, and never act on a result you cannot reproduce yourself.

Reference range

Range7 to 20 mg/dL

About

Urea, a nitrogen waste product. It rises in dehydration and after an upper gastrointestinal bleed, when digested blood is absorbed as protein.

When it is low

Malnutrition, liver disease, overhydration, SIADH

When it is high

Renal failure, dehydration, GI bleeding, high protein diet, catabolic state

The rest of Anatium

Lessons, flashcards, condition modules, the anatomy lab, clinical cases and the AI study assistant are free, and need an account.

Request access