The invention concerns solid-phase immunochromatographic methods for detecting an analyte in a liquid sample. In the inventive methods, a binding reagent conjugated with a particulate marker is extemporaneously added in liquid form.

The invention relates to a device for determining an analyte in a liquid sample. The inventive device consists of: a capillary action means (1), involving lateral migration, defining a reference capillary action direction and comprising a liquid sample deposit area (3) and an analyte-detection area (5) which is d...