How to find out if i have disuse atrophy? xray scan or blood sample? i exercise often but no mass increase in my legs (calfs) and blemish after scabs.

You dont: If you truly "exercise often" then you don't have disuse atrophy. Disuse atrophy is defined by atrophy caused by lack of use, as the name implies. As in a person whose arm is in a cast for 8 weeks might have disuse atrophy from not having used their arm for that time. Again, if you truly exercise often, you don't have disuse atrophy, another cause should be sought. Thank you for your question.