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DrRussMD, Board Certified Physician
Category: Medical
Satisfied Customers: 64947
Experience:  Internal Medicine--practice all of internal medicine, all ages, family, health, prevention, complementary medicine, etc.
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If a urine culture is negative, does that mean absolutely

Resolved Question:

If a urine culture is negative, does that mean absolutely that there is no infection in a kidney? I only have one kidney. Urine protine is up, microalbumin is up and white cells are up to 11.9
Submitted: 5 years ago.
Category: Medical
Expert:  DrRussMD replied 5 years ago.
That is a very good question.
The protein and microalbumine are not really signs of infection.
And the lack of anything growing on culture...assuming a good lab...makes any infection very highly unlikely, if not impossible, but this then has to rest on clinical assessment...and.....what is wrong with the kidney.
Only the white cell count would indicate infection of the urinary track.
But it might also indicate nephritis or inflammation of the kidney from other causes.

To sort this out, I would want to see a protein to creatinine ration...if not a 24 hour urine collection for protein.
1 gram for example, would be in the nephritic range.

Of course having only one kidney all of this should be under the consult of a nephrologist right now.

good luck

Let me know if you have further questions, details or need clarification, just use reply.......

Customer: replied 5 years ago.
I forgot to mention thatLeucocytes Estalso in urine and serum protein up to 8.2
Expert:  DrRussMD replied 5 years ago.
A high serum protein might warrant a test called serum electrophoresis to make sure there are not abnormal proteins.
leukocytes in the urine can be consistent with infection but also with nephritis.

nephrologist very important at this point.
Also might want to make sure there are no abnormal proteins in the urine.

good luck

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