A generalized extraction-TLC procedure for identification of drugs.

A combination of liquid-liquid extraction and thin-layer chromatography permits rapid identification of a large variety of drugs in pharmaceutical or street dosage forms, or in biological materials. The system utilizes selective pH extraction combined with internal standards. Limits of sensitivity are in the submicrogram level. The procedure is rapid and requires minimal equipment and training of personnel. It can be supplied in toxicology involving both clinical and forensic demands.