what does blood test does creatine test
A creatinine blood test measures the level of creatinine in the blood. Creatinine is a waste product that forms when creatine breaks down. Creatine is found in your muscle. Creatinine levels in the blood can provide your doctor with information about how well your kidneys are working. The kidneys are a pair of fist-sized organs located at the bottom of the rib cage. One kidney is on each side of the spine.