Drug Abuse Among Elective Surgeries: an Observational Study.

Urine was then tested for evidence of substance abuse using the multi-drug screen panel dip steak ABONtm (Abon Biopharm (Hangzhou) CO., Ltd) which is a lateral flow chromatographic immunoassay . It allowed for qualitative detection of multiple drugs in a single run. This kit was chosen for its ability to detect the most commonly abused substances in Egypt, namely: opioids, benzodiazepines, hashish, and tramadol. A single coloured line at region C for of a specific drug indicated a positive result, whilst two coloured lines at both regions C and T indicated a negative result. The absence of coloured lines was an indication of the invalidity of the particular kit, and the kit was discarded.