I don't think just normal blood work tests for auto immune issues or certain diseases so you also may want to ask about that too. Also maybe to have it repeated. I know in the past with mine it would vary greatly in between. As for the shoes for me ex even wearing socks can aggrivate my issues to an extreme. It really depends. Have you lost weight through this?That could be a sign to your body is not absorbing nutrients and why the stomach issue,hair loss,and possible other issues.