PURPOSE: To confirm sure passing of liquid sample through a judging display part and whether it can be judged or not by fixing an indicator which is changed in color following to passing of liquid sample and the changed color is held for a long time on a judging possibility confirmation display part, and holding the indicator on the fixing position for a long time.

CONSTITUTION: A housing 1a is formed with a liquid intake hole 3, a judging display part 4, and a judging possibility confirmation display window 5. An inner sheet 5 is formed with in order a reaction part 8 containing a first reagent, a judging display part 9, a judging possibility confirmation display part 10, and a disiccative part 11. sample absorbed at the liquid intake part 7 is combined with the first reagent labelled at the reaction part 8, and developed to the next display part 9. The display part 9 is formed out of a chromatograph medium such as nonvoven fabric, a second reagent peculiarly combining with an object to be inspected is spread and fixed thereon, and hence the object to be inspected combined with the first reagent is caught and fitted to the labelled substance so as to present red violet color. The display part 10 is fixed with an indicator, and it is changed in color following to passing of the sample and held, regardless of existence of tested object in the sample.