Lupus nephritis is one of the most serious complications of lupus. It occurs when SLE causes your immune system to attack your kidneys—specifically, the parts of the kidney that filter the blood for waste products.
Kidneys process your body’s waste matter. Therefore, testing a sample of your urine can show any problems with the way your kidneys are functioning. The most common tests look for cell casts (fragments of cells normally found in the blood, or fragments of the tubules of the kidneys) and proteinuria (protein being spilled into your body because your kidneys are not filtering the waste properly).
Blood Tests
Certain blood tests can provide information about kidney damage and how well your body is filtering waste. The creatinine blood test is usually ordered along with a blood urea nitrogen (BUN) test to assess kidney function. A combination of blood and urine creatinine levels may be used to calculate a creatinine clearance. This measures how effectively your kidneys are filtering small molecules like creatinine out of your blood. Serum creatinine measurements (along with your age, weight, and gender) are used to calculate the estimated glomerular filtration rate (EGFR), which is used as a screening test for evidence of kidney damage.
Kidney Biopsy
A kidney biopsy is done in a hospital. While you lie on your stomach your nephrologist will insert a very thin, long needle through the skin of your back and remove a tiny piece of tissue from one of your kidneys. The tissue will be examined under a microscope to determine how much inflammation or scarring is present.
If the above description of Lupus nephritis disease can not satisfy your curiosity, then you can send a message to kidney-support@hotmail.com Here we have the most professional answer for you, we will be in 24 hours give you a satisfactory answer.