Thank you for your query at AskTheDoctor.com
I understand your concern.
In long standing UTIs or kidney infections, protein can be excreted in the urine, in the form of micro albumin.
If a significant amount of protein is lost, it does reduce the blood protein levels, thereby altering the albumin/globulin ratio.
However, the common causes of low protein in the blood are liver diseases such as hepatitis, kidney infections, malnutrition, malabsorption syndromes, Type 2 DM, etc
So, a detailed evaluation is required to find out the exact cause.
Hope this was helpful,
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