A specimen conveyance system comprising: a loading unit for loading a specimen; a conveyance line for conveying the specimen in both directions; a plurality of analysis devices that are connected to the conveyance line and adapted to analyze the specimen based on examination items of the specimen; a plurality of transfer machines, each connected to a corresponding one of the plurality of analysis devices and to the conveyance line and adapted to convey the specimen out from the conveyance line into the analysis device and out from the analysis device into the conveyance line, a storage unit for collecting and accommodating the specimen; and an operation control unit for setting a conveyance route of the specimen before the specimen is conveyed through the conveyance line, wherein, when an additional examination item is requested for the specimen after it has been conveyed from one of the analysis devices into the corresponding transfer machine, the operation control unit is adapted to reset the conveyance route of the specimen such as to include an analysis device that can analyze the additional examination item and such that the specimen is conveyed according to the reset conveyance route; characterized in that the specimen conveyance system further comprises information reading devices (40, 50, 90, 101, 111) adapted to read the specimen information of the specimen and arranged in each of the loading unit, a dispensing unit, and the transfer machines; when an abnormality is found in an analysis result of the specimen at any one of the plurality of analysis devices, the analysis device is adapted to notify the abnormality result to the operation control unit, and the operation control unit is adapted to reset the conveyance route of the specimen based on the notified abnormality result and based on specimen information read by the information reading device arranged in the transfer machine connected to the analysis device such that the specimen, after it has been conveyed into the transfer machine from the analysis device, is conveyed according to the reset conveyance route; and, when the specimen information of the specimen having the abnormality result and having been conveyed into the transfer machine from the analysis device cannot be read by the information reading device arranged in the transfer machine, the operation control unit is adapted to convey the specimen having the abnormality result from the transfer machine to the loading unit through the conveyance line, to read the specimen information of the specimen having the abnormality result by the information reading device arranged in the loading unit, and to set the conveyance route of the specimen based on the read specimen information. a loading unit for loading a specimen; a conveyance line for conveying the specimen in both directions; a plurality of analysis devices that are connected to the conveyance line and adapted to analyze the specimen based on examination items of the specimen; a plurality of transfer machines, each connected to a corresponding one of the plurality of analysis devices and to the conveyance line and adapted to convey the specimen out from the conveyance line into the analysis device and out from the analysis device into the conveyance line, a storage unit for collecting and accommodating the specimen; and an operation control unit for setting a conveyance route of the specimen before the specimen is conveyed through the conveyance line, wherein, when an additional examination item is requested for the specimen after it has been conveyed from one of the analysis devices into the corresponding transfer machine, the operation control unit is adapted to reset the conveyance route of the specimen such as to include an analysis device that can analyze the additional examination item and such that the specimen is conveyed according to the reset conveyance route; characterized in that the specimen conveyance system further comprises information reading devices (40, 50, 90, 101, 111) adapted to read the specimen information of the specimen and arranged in each of the loading unit, a dispensing unit, and the transfer machines; when an abnormality is found in an analysis result of the specimen at any one of the plurality of analysis devices, the analysis device is adapted to notify the abnormality result to the operation control unit, and the operation control unit is adapted to reset the conveyance route of the specimen based on the notified abnormality result and based on specimen information read by the information reading device arranged in the transfer machine connected to the analysis device such that the specimen, after it has been conveyed into the transfer machine from the analysis device, is conveyed according to the reset conveyance route; and, when the specimen information of the specimen having the abnormality result and having been conveyed into the transfer machine from the analysis device cannot be read by the information reading device arranged in the transfer machine, the operation control unit is adapted to convey the specimen having the abnormality result from the transfer machine to the loading unit through the conveyance line, to read the specimen information of the specimen having the abnormality result by the information reading device arranged in the loading unit, and to set the conveyance route of the specimen based on the read specimen information.