Plus, most doctors don’t want to put you through the inconvenience of collecting urine for a whole day. If the ratio is greater than 2.0, then significant protein loss through the kidneys exists, even if BUN and creatinine are within normal limits. In this situation a protein:creatinine (UPC) ratio up to 2.0 in both cats and dogs is acceptable. If you’re experiencing acute kidney failure, it’s not effective to take a whole day to collect urine. Normal BUN and creatinine values suggest the kidneys are likely healthy and working well.

Sometimes your care team needs answers faster. This shows your doctor how much waste is being filtered out of your body-and how your kidneys are performing. The lab will test the amount of creatinine in your urine, and then compare that to the amount of creatinine in your blood. You’ll be asked to collect all of your urine over that time frame and bring it in to your doctor. Sometimes creatinine levels are tested over a 24-hour period. What does a creatinine level test involve? A serum creatinine blood test, along with factors such as age, weight, and medical history, can help doctors understand how well your kidneys are functioning and whether there may be an issue. Having high creatinine levels probably isn’t harmful on its own, though it can be a marker of other health conditions-including chronic kidney disease (CKD).

This measurement is called creatinine clearance. Your doctors can measure the amount of creatinine in your blood and in your urine to get an idea of how well your kidneys are working. Healthy kidneys filter creatinine out of your blood, and it leaves your body through urine. It is typically removed through the kidneys. Creatinine is a waste product that is produced by your muscles.

Buncreatinine ratio normal range