Investigation of drugs in the negative urine samples in one of the drugs of abuse laboratories in Tehran

Crisis of drugs of abuse is one of the main problems of all over the word in the field of health and so in Iran. Increasing of seized drugs as well as varied drugs and potentially abused substances need to be scheduled and developed in the methods of screening for drug abuser. Now, morphine, amphetamine, and methamphetamine are in drugs of abuse screening program in Iran. So, it seems that this program needs a complete revise in basic.
This study performed by 153 urinary samples, which were announced negative by routine procedure. The urines were investigated by Randox biochip technology based on antigen-antibody interaction.
Results show that 1, 2, 3, 12, 3, 3, 8, 6, and 9 urines were contaminated by barbiturates, methamphetamine, morphine, benzodiazepines, buprenorphine MDMA, methadone TCA, and cannabinoids respectively. No urine was investigated by cocaine and amphetamine contamination.
According to the results, the screening program of drugs of abuse in Iran needs a complete revise necessarily