The purpose of this invention is to provide a biochip holder and holding kit that make it possible to efficiently process large numbers of biochips that have detection samples exposed on both sides. This invention provides a biochip holder characterized by having the following: a concavity (24) that accommodates a biochip (10); and support parts (26) that are provided at the edges of said concavity and support the biochip accommodated inside the concavity such that said biochip is substantially horizontal and the underside thereof is above the bottom surface (24a) of the concavity with a gap therebetween.
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