To provide a laboratory carrying-in and carrying-out system for storing laboratory sample test tubes and carrying out stored sample test tubes.

A laboratory carrying-in and carrying-out system for storing sample test tubes and taking out each stored sample test tube includes a rack handling part and a storage section. The rack handling part includes a conveyance system and a determination unit. The conveyance system receives a carrying-in primary rack PR storing sample test tubes and conveys the rack PR to the determination unit to determine at least one predetermined parameter concerned with a previously determined classification reference of the sample test tubes. The conveyance system takes out each sample test tube from an analyzed primary rack, and further in order to accommodate the taken-out sample test tube in a storage rack SR and store the storage rack in a storage section, reclassifies the taken-out sample test tube to a suitable storage rack in accordance with a classification reference parameter determined for the sample test tube.