How to diagnose Lupus Nephritis ?
Lupus nephritis is diagnosed through urine and blood tests and a kidney biopsy:
                
- Urinalysis. Urinalysis is testing of a urine sample. The urine sample is collected in a special container in a health care providers office or commercial facility and can be tested in the same location or sent to a lab for analysis. For the test, a nurse or technician places a strip of chemically treated paper, called a dipstick, into the urine. Patches on the dipstick change color when blood or protein is present. A high number of red blood cells or high levels of protein in the urine indicate kidney damage.  - Blood test. A blood test involves drawing blood at a health care providers office or commercial facility and sending the sample to a lab for analysis. The blood test can show high levels of creatinine, a waste product of normal muscle breakdown excreted by the kidneys, which increases when the kidneys are not functioning well.   - Biopsy. A biopsy is a procedure that involves taking a small piece of kidney tissue for examination with a microscope. The biopsy is performed by a health care provider in a hospital with light sedation and local anesthetic. The health care provider uses imaging techniques such as ultrasound or a computerized tomography scan to guide the biopsy needle into the kidney. The kidney tissue is examined in a lab by a pathologista doctor who specializes in diagnosing diseases. The test can confirm a diagnosis of lupus nephritis, determine how far the disease has progressed, and guide treatment. The American College of Rheumatology recommends biopsies for all people with evidence of active lupus nephritis that has not been previously treated.