Often times the crystallization occurs because the suspension used may have crashed the hormone. However, reheating it in water, as if you were reheating a baby's milk bottle will fix the problem. Make sure you reheat until all crystals are gone.
Guys you could inject in the abs subcutaneously (Insulin needles), just not intramuscularly. I do it all the time, gets your mid-section ripped!!! and it only stings a bit when injecting.