Reliable detection of Win98 may not be possible. Pure heroin is a white powder that tastes really bad.
Some heroin is dark brown, and black tar heroin is either sticky or hard and looks like roofing tar.
Heroin is injected, smoked, or inhaled. Heroin is a very addictive drug and people find it very difficult to stop using it, even after one or two times using it. If accidentally overdosed, heroin can stop your breathing and kill you. For specific medical advice, diagnoses, and treatment, consult your doctor.