This is a medical question of type : exams and tests 
 How to diagnose Hemolytic Uremic Syndrome in Children ? 
 A health care provider diagnoses hemolytic uremic syndrome with
                
- a medical and family history  - a physical exam  - urine tests  - a blood test  - a stool test  - kidney biopsy
                
Medical and Family History
                
Taking a medical and family history is one of the first things a health care provider may do to help diagnose hemolytic uremic syndrome.
                
Physical Exam
                
A physical exam may help diagnose hemolytic uremic syndrome. During a physical exam, a health care provider most often
                
- examines a child's body  - taps on specific areas of the child's body
                
Urine Tests
                
A health care provider may order the following urine tests to help determine if a child has kidney damage from hemolytic uremic syndrome.
                
Dipstick test for albumin. A dipstick test performed on a urine sample can detect the presence of albumin in the urine, which could mean kidney damage. The child or caretaker collects a urine sample in a special container in a health care provider's office or a commercial facility. For the test, a nurse or technician places a strip of chemically treated paper, called a dipstick, into the child's urine sample. Patches on the dipstick change color when albumin is present in the urine.
                
Urine albumin-to-creatinine ratio. A health care provider uses this measurement to estimate the amount of albumin passed into the urine over a 24-hour period. The child provides a urine sample during an appointment with the health care provider. Creatinine is a waste product that is filtered in the kidneys and passed in the urine. A high urine albumin-to-creatinine ratio indicates that the kidneys are leaking large amounts of albumin into the urine.
                
Blood Test
                
A blood test involves drawing blood at a health care provider's office or a commercial facility and sending the sample to a lab for analysis. A health care provider will test the blood sample to
                
- estimate how much blood the kidneys filter eachminute, called the estimated glomerular filtrationrate, or eGFR. The test results help the healthcare provider determine the amount of kidneydamage from hemolytic uremic syndrome.  - check red blood cell and platelet levels.  - check for liver and kidney function.  - assess protein levels in the blood.
                
Stool Test
                
A stool test is the analysis of a sample of stool. The health care provider will give the child's parent or caretaker a container for catching and storing the stool. The parent or caretaker returns the sample to the health care provider or a commercial facility that will send the sample to a lab for analysis. Stool tests can show the presence of E. coli O157:H7.
                
Kidney Biopsy
                
Biopsy is a procedure that involves taking a small piece of kidney tissue for examination with a microscope. A health care provider performs the biopsy in an outpatient center or a hospital. The health care provider will give the child light sedation and local anesthetic; however, in some cases, the child will require general anesthesia. A pathologista doctor who specializes in diagnosing diseasesexamines the tissue in a lab. The pathologist looks for signs of kidney disease and infection. The test can help diagnose hemolytic uremic syndrome.