<s>[INST] I have a swollen left foot and ankle. Last blood test showed high levels of creatine. Have just had a urine sample taken,  could it be the kidneys. I also have pain under the right rib cage around to my back and I also have very sore legs in bed at night. [/INST] Hello, When there is high creatinine that means the kidneys function is not good and the symptoms include swollen legs and face the extra fluid will be accumulated in the body as the kidney cannot excrete it your doctor may prescribe you Las ix for this problem, but the root cause must be treated first you need a complete evaluation. Please consult a good nephrologist as soon as possible. Hope I have answered your query. Let me know if I can assist you further.  </s>