Drugs, Prescription - As enacted, requires a law enforcement officer to cause to be administered by a qualified practitioner at a hospital a blood or urine test on a person for the presence of a psychotropic drug if such officer has probable cause to believe that the person committed a mass shooting; directs the health science center to study the drug interactions between any drugs found in the person's blood or urine. - Amends TCA Title 38; Title 40; Title 53; Title 63 and Title 68.