I just got my lab results back from the VA with a 1.8 creatinine level. They had me on Losartan for high blood pressure for nearly a year, along with HCTZ, and it did not work at all. They have finally switched me to Benazapril with HCTZ and I am wondering if being on the wrong BP medication could have caused Stage 2 renal disorder. A nurse practitioner friend is telling me to be retested, because this may have been the result of a recent illness or something I have been eating. Frankly, it has me scared out of my mind. What is the wisest course of action?