What do elevated creatinine and BUN indicate?
Elevated creatinine and blood urea nitrogen (BUN) levels are likely evidence of decreased kidney function. Creatinine and urea nitrogen are waste products that your kidneys normally remove from your blood. If your kidneys are not working properly, these substances may build up in your blood. Kidney function tests include blood tests that measure creatinine and urea nitrogen. If you have elevated creatinine and BUN, your doctor will likely recommend additional tests to further evaluate your kidney function.