creatine phosphokinase (cpk)

I have slightly elevated CK 188 U/L and my doc asked me if I´ve been doing exercises which I havent. So I asked him that I´m on TRT and inject 4 times a week (2x testo+2x HGC) and he said yes it can be the cause. I don´t know if that can be correct. I´m on statins as well but maybe that has no...