### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Hi I have congenital birth defects of my ureters and have had chronic kidney issues. I had a nephrostomy it kept giving me really bad infections so infectious disease said the kidney and the nephrostomy have to come out! Well all the test showed both my kidneys are fine! But when they went in the kidney was dead they said it looked like a dead fetus. How is it possible for it not to show up on test! Now Im swelling gained 30 PDS in 2 months! I now have pneumonia and my blood pressure is sky high Ive never had pressure! But because the issue with my kidney is not showing itself its hard to get treatment! I also developed a hernia after the kidney was removed all my organs shifted. They put all the organs back and put a mesh barrier in. A CT Scan shows fluid in my stomach and in my back. Also around the mesh barrier I have severe flank pain where my left kidney is, my white cell count was silted elevated and they said my liver wasnt doing great. If my kidney backing up doesnt show on test what else can they do to see what is wrong with my kidney. Im very in tune with my body. I knew I had pneumonia I told the doctors, I was right! But I other then blood, ultrasound , CT is there anything else that can verify my kidney is backing up?

### output:

Good day! A nuclear GFR would determine kidney function and is the gold standard to check kidney function. CT SCAN may also help and assess the kidney function but nothing beats a nuclear GFR or MAG3 examination.  I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications at: http://www.ChatDoctor .com/doctors/ Chat Doctor.  Best wishes.