BUN / Creatinine Ratio

CalculatedFiller

Blood urea nitrogen divided by creatinine.

A ratio of two numbers already reported, itself derived from a third.

This one isn’t a test

BUN / Creatinine Ratio = Blood Urea Nitrogen ÷ Creatinine

No extra sample was taken for this and no extra assay was run. It is arithmetic on numbers already on your report, but it still adds a line to the advertised test count.

Computed from Serum Creatinine and Blood Urea Nitrogen.

That does not make the number useless: eGFR is calculated and doctors act on it every day. It means it should not be counted as a separate test when you are comparing what a package costs.

Part of

How we rate it: Filler

Rarely changes anything for someone with no symptoms.

This rating and the description above were written against published screening guidelines by someone who is not a clinician, and are awaiting review by one. We would rather say that than imply an authority we do not have.

Check-ups that include it

In 84 of the 93 check-ups we track, 90%. Cheapest first.

and 72 more.

Also sold as

Every one of these names refers to this same test. Resolving them to one canonical entry is what makes an honest comparison possible.

  • bun creatinine ratio
  • bun sr creatinine ratio
  • urea creatinine ratio
  • urea sr creatinine ratio

Information here is for comparing packages, not for diagnosing yourself. Talk to a doctor about which tests you actually need.