Proteinuria in dog urine

I have an 11 year old border collie lab mix. She's a spayed female. Last week we did senior bloodwork on her for a dental and it included a urine. Her bloodwork came back normal but she had 3+ protein in her urine. Is this a cause for concern? This is her results. Thank you!

Hello!  Im afraid that again, "It depends." Why is there protein in the urine?  If there is already known to have been massive contamintion  eg from the womb, or even if the sample arrived in a milk bottle, then this wouldn't surprise me.  However, high protein in the urine can also be because excess protein has leaked through the kidneys into the bladder, which can suggest that renal disease or kidney failure might be present.  Indeed, proteinuria can be the first sign of this.  I have also seen proteinuria in the face of normal kidneys, because there has been damage or a lump to the bladder or urethra.  Your vet will normally check the dogs' other perameters and review the results in the context of the patient, before coming to a conclusion as to what this signifies in your dogs' particular case, and where they want to go from here.

Inflammation of the bladder, cystitis, can be a cause of proteinuria.  What have your vets found?

So she has a history of protein in her urine ranging from 1-2. Her kidney values are normal.

Its fairly normal nowadays for possible kidney failure to be flagged up before a raise in urea / crea.  There is a widely followed system called IRIS for assessment of kidney disease (I think it has its own website) which relies on objective information collected by your vet.  You don't mention specific gravity of urine, which is one figure that may be crucial to this assessment.  Your vet can assess the numbers in order to score your cats' kidney's status and will usually make recommendations accordingly.  Kidney disease tends to be progressive, so where kidney problems are detected, early treatment is often advised.

'What is my cats' IRIS score and do I need to be concerned?' Is usually an excellent question for your vet.

I WOULD LIKE To APOLOGISE for turning your dog into a cat here! Especially a collie-lab!   Please apologise to your dog on my behalf (its a peril of not having the pet on the table). However, dogs get renal disease too and everything that I said holds for dogs as well as cats in this case.