Creatine kinase

Three years ago when my twitching started, I was at 268. My twitching subsided after a couple clean EMGs and now it is back over the last month or so. Got retested and now my CK level is 305. Is this clinically I need different or is it insignificant? My PCP wants me to not do any work out for the next week and then get retested but he doesn’t seem terribly concerned.