Diagnosis of Hemolytic Uremic Syndrome
Blood tests: Your blood is tested for signs of kidney damage or infection.
Urine test: Your urine is tested for signs of kidney damage. You may also need to collect all of your urine for 24 hours for testing. This longer test gives more detailed information about your kidney function.

Bowel movement sample: A sample of your bowel movement is tested for the germ that is causing your illness. This helps healthcare providers decide the best medicine to treat you.

Percutaneous kidney biopsy: A percutaneous kidney biopsy is when a very small piece of your kidney is taken out and tested. For this procedure, you will need to lie face-down and hold very still. You may get medicine to help you relax before the biopsy. You may also get medicine to make the area numb (lose feeling) before the needle is put in. Healthcare providers put a needle into your back and through to your kidney. The needle has a sharp edge that will cut out a tiny piece of your kidney. The needle may have to be put in two or more times. After the needle is taken out, a bandage will be put over the area.