Patent ID: 8211380

Claim:
A bioassay system using a bioassay substrate comprising detection surfaces on which detection substances can be solidified, said detection surfaces being provided on a surface of a disk form substrate capable of reading out record information optically, said detection surfaces being provided in groove structures provided in said surface of said substrate, wherein said groove structures comprise a plurality of grooves that extend in radial directions as viewed on an upper side, wherein said grooves extend continuously from a hole at a center of said disk to an outer circumference of said disk such that each of the plurality of grooves forms a fluidically continuous flow path, and said bioassay substrate providing positional information and rotational synchronism information, wherein said bioassay system comprises, at least: substrate rotating means for rotatably supporting said bioassay substrate; a spotting device for spotting detection substance-containing solutions and a labeled target substance-containing solution onto said detection surface sites, while rotating said bioassay substrate by said substrate rotating means; a focus servo mechanism for maintaining a fixed distance between said spotting device and said bioassay substrate; and a tracking servo mechanism for making said spotting of said solutions follow up to said detection surface sites, based on said positional information and said rotational synchronism information.