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Pattern of Urine Toxicology Screening in a Lagos Psychiatric Hospital

AO Olalekan
AO Okewole
I Onyendi
AO Adebayo
OT Okunola
MU Dada
HTO Ladapo
RA Lawal


Toxicology screening has clinical and forensic applications in evaluating severe or life-threatening symptoms in patients presenting with signs and symptoms suggestive of intoxication or overdose. In both acute psychiatric and medical settings, urine toxicology has been found helpful in detection of substances of abuse. The aim of this study was to determine the pattern of substance use as detected by urine toxicology screening amongst patients at a psychiatric facility in Lagos Nigeria. A Total of 1555 subjects made up of males (1480) and females (75) were screened using the one step multi-6 drug test panel immunoassay for qualitative detection of Methadone, Methamphetamine, Benzodiazepine, Cocaine, Morphine and Tetrahydrocannabinol. 927 (59.6%) subjects were positive with one or more drugs passing the concentration cut off. Tetrahydrocannabinol (42.3%) and Benzodiazepine (49%) were found to be predominant in the population studied. This study shows the most common psychoactive substance used in this environment is cannabis and also, the significant agreement between clinical diagnosis and urine toxicology screening.

Keywords: Urine screening, Toxicology, Substance use, clinical diagnosis