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Blood Urea Nitrogen (BUN)

This Medical Laboratory Science lesson in Clinical Chemistry supports laboratory science learning and laboratory interpretation for medical laboratory students and professionals.

Interpret BUN reporting conventions, prerenal versus renal patterns, and non-renal causes of elevation.

Foundational24 min read21 sectionsClinical Chemistry
Section 1 of 210%

Learning Objectives

Getting started

Section 1 of 21

Learning Objectives

Learning Objectives

Section: Learning Objectives

Each objective below describes a competency you will apply at the chemistry bench, not rote definitions in isolation.

  • Interpret BUN reporting conventions and non-renal causes of elevation
  • Use BUN with creatinine for prerenal versus renal pattern framing
  • Recognize hydration, GI bleed, and protein load as BUN confounders

Section 1 of 21