[COLOR=rgba(0, 0, 0, 0.701961)]Hey brothers I know a lot of people have blood work done and testing creatinine and BUN levels are top priorities but I know when I have an sma-20 my levels always comeback bad because I workout a lot so I always have to take a week off the gym and then go back and have them checked but there's also a test that test for something called cystatin-c which is a protein in the blood if kidney function is declining high levels of it will be found in the blood and unlike creatinine and BUN the test ain't effected by metabolic enzymes from muscle breakdown so it's a good test to have to be sure of your kidney function. [/COLOR]