Is blood urea nitrogen (BUN) the same as bilirubin?

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Blood Urea Nitrogen vs Bilirubin

No. Blood urea nitrogen (BUN) and bilirubin are different blood tests and represent different substances. BUN measures urea nitrogen in blood, which is related to urea production and kidney filtration. [1]

Bilirubin is a yellowish substance produced during breakdown and recycling of old red blood cells, and it is used to assess liver health and jaundice. [2]

Sources (2)

[1] Guideline 2023

BUN (Blood Urea Nitrogen): MedlinePlus Medical Test

U.S. National Library of Medicine (MedlinePlus)

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[2] Guideline 2023

Bilirubin Blood Test: MedlinePlus Medical Test

U.S. National Library of Medicine (MedlinePlus)

View Source

Blood Urea Nitrogen vs Bilirubin

Sources (2)

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