The iSCREEN multi panel drug test is used by collecting the urine specimen, inserting the device into the specimen, and then reading your results. iSCREEN uses an easy, fast, qualitative, visually read competitive binding immunoassay method for screening without the need for instrumentation. The method employees a unique mixture of antibodies to selectively identify the drug of abuse and their metabolites in test samples with a high degree of sensitivity. With the iScreen multi drug test, you can test from 1-10 drugs simultaneously. (25 Tests Per Box, Shelf Life of 24 months, 99% Accuracy.