Biosensor kit

#The present invention relates to a biosensor kit which has a biosensor chip.

#Biosensors which use a field-effect transistor (FET) have been proposed (see Patent Literatures 1 to 3). Generally, field-effect transistor-based biosensors include a field-effect transistor and a reaction field for a detection target, which is formed over a channel. The reaction field is provided with a reaction film with which the detection target is bound. The biosensor applies a gate voltage to the field-effect transistor by a gate electrode from above the reaction film, and measures a source-drain current at this time to determine the presence or absence, concentration etc. of the detection target, which has been provided on the reaction field. The FET-based biosensors exhibit very high sensitivity, and therefore there has been growing expectations for practical use.

#PTL 1 Japanese Patent Application Laid-Open No. 2004-85392 PTL 2 Japanese Patent Application Laid-Open No. 2006-201178 PTL 3 Japanese Patent Application Laid-Open No. 2007-139762

#FIG. 1A is a plan view of a first example of a biosensor chip of a first form;

#FIG. 1B is a sectional view of the biosensor chip taken along line A-A′ illustrated in FIG. 1A;

#FIG. 2A is a plan view of a second example of the biosensor chip of the first form;

#Biosensor Kit

#A biosensor kit of the present invention has a biosensor chip and a packing body which seals therein the biosensor chip. The packing body for sealing therein the biosensor chip is preferably a laminated film having a metal film. This is to effectively prevent the possible permeation of moisture and penetration of light from the outside to the inside. The packing body has, for instance, a heat-fusible resin layer as the inner layer of a film constituting the packing body, and the opening of the packing body is closed by fusion.

#In the packing body, a desiccating agent or a moisture absorbent may be sealed together with the biosensor chip. This is because if the biosensor chip has been exposed to moisture, the chip tends to easily deteriorate. In addition, elements to be used in the sensing step may also be enclosed in the packing body, e.g, a washer for washing a reaction field, and a remover for removing a washing liquid from the reaction field after washing.