Lab

BUN medical abbreviation

BUN means "blood urea nitrogen".

Each meaning matched at least two public references (6 in all for BUN), checked October 23, 2026. The table lists them.

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What BUN means

Example

Sample lab panel row: "BUN."

A made-up line that shows the abbreviation in place. It is not about any patient and is not an instruction.

Related abbreviations

  • CRcreatinine
  • GFRglomerular filtration rate
  • AKIacute kidney injury
  • A1Chemoglobin A1c
  • ABGarterial blood gas
  • ALTalanine aminotransferase

Elsewhere on Rivvi

Questions

What does BUN mean in medical terms?

BUN means "blood urea nitrogen".

Where is BUN used?

BUN shows up in lab orders and charting. Its category here is lab.

Is BUN on the Joint Commission Do Not Use list?

No. BUN is not on the Joint Commission Do Not Use list or the ISMP error-prone list as checked on October 23, 2026.

Source: MedlinePlus Appendix B: Some Common Abbreviations (NLM); NCI Thesaurus, including CDISC SDTM terminology (NCI EVS); NLM SPECIALIST Lexicon abbreviations file (LRABR); FDA Acronyms and Abbreviations; NLM Medical Subject Headings (MeSH) 2026, abbreviation and acronym entry terms; Army Regulation 40-66, Appendix B: Authorized Medical Records Abbreviations. Data as of October 23, 2026. Last updated October 23, 2026. How we source data. Spotted an error? Send a correction.

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