BUN to Creatinine Ratio Calculator

Two kidney numbers read together. The ratio points at whether a raised creatinine is about the kidney itself or about something upstream of it.

mg/dL
mg/dL
Your BUN to Creatinine Ratio

Reference bands

ResultBand
Under 10Below the usual range
10 to 20Typical
Above 20Above the usual range

A ratio of roughly 10:1 to 20:1 is the commonly quoted normal range.

One number is one line of your test.

BloodMarker reads your whole panel and tells you what the lines say together, which is the part no single calculation can do.

Your values carry over · PDF or a photo · about 8 seconds

Questions

What does a high BUN to creatinine ratio suggest?

It is often associated with dehydration or reduced blood flow to the kidneys rather than with kidney damage itself, but it has many causes and needs a clinician to interpret.

Is this a kidney function test?

No. eGFR is the measure of kidney function. This ratio adds context to it.

Other calculators

Not medical advice. These calculators are for information only. Reference bands differ between laboratories and none of these numbers can be interpreted without your history, your other results and a clinician. Nothing you type here is sent to us or stored on a server.