Question: WeĆ”can please, my son passed voluntary chemical-toxicological research on drug use. Biological object was – urine. The method of study was linked immunosorbent and immunopolyarizatsionny, and then was found tetragidrokannabinolovaya acid at a concentration of Cl = 39ng/ml. From the words of his son, he never took drugs. But before this analysis, he was treated Bioparoksom. Question: Is it possible manifestation of the substance after treatment? This substance appears only after taking marijuana
Answer: This drug can not give a positive reaction to the test. I think that your son is lying, like all addicts.