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What is this test?
➤ Cystatin C is a protein that is produced by the cells in your body. When kidneys are working well, they keep the level of cystatin C in your blood just right. If the level of cystatin C in your blood is too high, it may mean that your kidneys are not working well. A blood test for cystatin C can help your healthcare provider find your GFR (glomerular filtration rate). Your GFR number helps your healthcare provider know how well your kidneys are working.
Test Preparations
➤ No special preparation needed.