SALIVA ASSAY METHOD AND DEVICE

摘要

An improved method for determining the presence of an analyte in an oral fluid sample. A portion of the sample is mixed or contacted with a chromogenic substrate effective to produce a colored product upon reaction with alpha -amylase present in the sample. After a selected reaction time, the reaction mixture is inspected to determine the level of such colored product produced. Production of a level of colored product above a selected threshold within the reaction time indicates that an effective volume of undiluted oral fluid sample has been collected which is sufficient to allow detection of the analyte. A device for use in the method is also disclosed.