NARCOSTOP is a test for the qualitative determination of drugs in urine and saliva.Detection of drugs is carried out by immunochromatographic analysis. Immunochromatographic analysis is a method of determining the presence of concentrations of substances in biological materials (urine, saliva). This type of analysis is carried out using indicator strips, test cassettes or panels. Using this method, NARCOSTOP is a one-stage system for the qualitative determination of drugs and is an effective means of diagnosis. Kits can be used in clinical practice, as well as for self-use without equipment and special skills. NARCOSTOP can detect traces of drugs even after 5 days after a single use.