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Why Is My Dog Or Cat’s Urine Protein To Creatinine Ratio (UPC) High?

 

Why Is My Dog Or Cat’s Urine Protein To Creatinine Ratio (UPC) High?

Ron Hines DVM PhD

See What Normal Blood & Urine Values Are

Causes Of Most Abnormal Blood & Urine Tests

See How Tests Are Grouped

Your Pet’s Urine Protein:Creatinine Ratio = P:Cr, Pro:Creat In Your Pet’s Urine

One of the major problems in judging the amount of protein abnormally leaking into your pet’s urine due to kidney disease is that the amount varies depending on how much your pet drinks. The more it drank before you or your vet obtained the urine specimen, the more dilute the urine will be and the lower the protein content will be in each drop.

Creatinine is also eliminated in your pet’s urine. That is normal. (read here) The ratio of those two compounds, protein and creatinine, remains stable in dilute and concentrated urine. So determining the ratio between the protein and the creatinine lets your veterinarian adjust for the “diluteness” or “concentratedness” of the urine sample when judging the significance of spilled protein that the urine sample might contain.

The P:Cr test is not helpful when your pet is dehydrated, when the protein source is somewhere in the kidney structure itself, when the urine contains blood (visible to the eye or not), or when the pet has a urinary tract infection. It is also likely to be inaccurate if the urine contains large amounts of sediment.

Reasons Why Your Pet’s P:Cr ratio might be elevated:

All the same reasons for high urine protein content and microalbumin levels

High doses of corticosteroid medications can moderately increase your dog and cat’s protein:creatinine ratio.

Complementary Tests:

Complete urinalysis,   BUN,   blood Creatinine,   microalbuminuria test,   urine specific gravity,   SDMA test

DxMe

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