Ok so I have this assignment. I get DX, past med surg hx and medications being taken and I have to figure out why the labs are abnormal. I have it all figured out but one. My pretend patients BUN levels are low. She's not malnurished. Nothing was said to make me believe she has abnormal liver fnx. She has a IV infusing at 125 cc/hr but she's on Lasix for CHF. She also has a recent abdominal surg and is iron deficiency anemia. I'm not asking for the answer just hoping someone can point me in the right direction............