Abstract: The present invention provides an assay device for detecting an analyte in a fluid sample, comprising: a sample receiving member (1), which is fluidically connected to at least two components (2, 3) defining an assay flow path, at least one of which is a detection member (3) comprising an analyte detection zone (31); and a sample detection element (13) adapted to detect fluid at a particular point along the assay flow path. The present invention also provides the use of the assay device of the invention for indicating sample sufficiency when the assay device is exposed to a fluid sample and for indicating to a user after sampling that the device has failed due to insufficient sampling, and a method of alerting a user to the fact that a sufficient sample has been applied to an assay device of the invention.

Abstract: The present invention provides an assay device for detecting an analyte in a fluid sample, comprising: a sample receiving member (1), which is fluidically connected to at least two components (2, 3) defining an assay flow path, at least one of which is a detection member (3) comprising an analyte detection zone (31); and a sample detection element (13) adapted to detect fluid at a particular point along the assay flow path. The present invention also provides the use of the assay device of the invention for indicating sample sufficiency when the assay device is exposed to a fluid sample and for indicating to a user after sampling that the device has failed due to insufficient sampling, and a method of alerting a user to the fact that a sufficient sample has been applied to an assay device of the invention.