Your lab results are not that far out of normal. And remember the "normal" is a generalization. This could be "normal" for you. Most renal doctors will also look at your potassium results. If your kidneys are still functioning and are removing the potassium in your blood they feel better about your kideny function. You might want to do a 24 hour creatinine clearance test. This needs to be ordered by your doctor and if they feel it is something worth while they will tell you how to do this test. You can also try to stop taking the herbal suppliments. These might be interacting with the prescription drugs.