blood urea nitrogen

noun

: bun
Diarrhea and dehydration can wreak havoc with these ions, but two other blood test results were even more worrisome: the BUN (blood urea nitrogen) and creatinine.—Mark Cohen, Discover

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blood typing
blood urea nitrogen
blood vessel
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“Blood urea nitrogen.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/blood%20urea%20nitrogen. Accessed 3 Nov. 2025.

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