In a two-dimensional conveyance line employing an electromagnetic conveyance technique, carriers are conveyed in consideration of the length of a group of stagnated carriers, so as to reduce idle positions and ensure conveyance efficiency of a specimen inspection system and maximize the number of carriers conveyed simultaneously.
In a two-dimensional electromagnetic conveyance line that supplies a current to a winding of an electromagnetic circuit and generates an electromagnetic force between the winding and a carrier with a magnet that holds a test tube to move the carrier, the processing efficiency of a specimen inspection system is improved by changing the current of the electromagnetic circuit to change a conveyance speed of the carrier to which the specimen sample is mounted, and by shortening the conveyance time, and reducing the conveyance speed of the carrier and increasing the number of carriers that are conveyed simultaneously as an alternative to a detour of the carrier during a congestion.