I am taking a nursing renal open book test and I am stumped. The question is regarding a pt. whose Bun is elevated but creatinine and lytes are normal. The questions I have to chose from are: The result of a high protein diet or The result of a lab error or renal failure or normal post dialysis labs Would you please help me?
Hi, Thanks for wiring in. If BUN is high, but creatinine is normal, then the kidney is generally not damaged but is not getting adequate blood supply due to another problem such as deny Chat Doctor.  BUN levels can increase with the amount of protein in the diet. High-protein diets may cause abnormally high BUN levels and this might be the likely possibility.