Testing your creatinine levels is used to evaluate your kidney function. I noticed in your signature line that you have lupus nephritis, so this test is important. I've attached a link to the best website for all our questions regarding tests, etc. I hope you get the info you need. Your best resource is your rheumy or family doctor though.
33 years old. Diagnosed with lupus in 2000. Fibromyalgia, anti-phospholipid syndrome(stroke),Sjogren's, Raynaud's, seizure disorder, libman sach's endocarditis, vasculitis, sacroiliitis, Neutropenia, thrombocytopenia. Prednisone, Imuran, Coumidin, Clobazam, Amitriptyline, didrocal, monopril, calcium, Cykolokapron, multi-vitamin, vitamin D, Magnesium, vitamin B6, Acidophilus