Avoid at all costs. If you must have your fix and have legitimate pain, see a MD Oftentimes street pills are fake presses and have hot spots. This means a spot where fentanyl is in high concentration. You could very well instantly die or get very sick depending on tolerance. What if the idiot pressed it with carfentanil? This is an elephant tranquilizer where even a grain can be deadly If you encounter a suspiscious pill and want to test it before, I assume, turning it into the police then you must test it with a marquis reagent test to detect fentanyl. Don't play with pills kids.