The one step AMP (Amphetamines) test is a simple one step immunochromatographic assay for the rapid, qualitative detection of AMP in urine. The amount of drugs and cheap ways to pass a urine test or metabolites present in the urine cannot be estimated by the assay. The assay results distinguish positive from negative samples. A positive result indicates the sample contains AMP above the cut-off concentration. The AMP test provides only a preliminary analytical result. A more specific alternative chemical method must be used in order pass piss test with water and to obtain a confirmed analytical result. Gas chromatography / mass spectrometry (GC/MS) is the preferred method. Clinical consideration and cheap ways to pass a urine test or professional judgment should be applied to drug testing in urine method me any drug of abuse test result, particularly when preliminary positive results are used.