Abstract: The invention provides a device (10) for detection and providing an indication of the concentration of a single pregnancy associated hormone (especially hCG), comprising a matrix (16) defining an axial flow path, the matrix comprising: (i) a sample receiving zone (18) at the upstream end of the flow path, for receiving a fluid sample; (ii) a plurality of test zones (22) positioned within the flow path and downstream from the sample receiving zone (18), wherein each test zone is capable of detecting a different concentration of hormone compared with an adjacent test zone; and (iii) an indicator (26) for recording a previous hormone concentration recorded by the same or a previous device. The devices are especially useful to give an indication of a miscarriage or non-natural termination. Methods of using the assay devices are also provided.