A sample analysis system comprising: at least two sets each of which includes a measurement block including a first measurement unit and a second measurement unit configured to test a sample contained in a sample container , and each of which includes a transport unit for transporting a sample rack , the transport unit being disposed corresponding to the measurement block, wherein the transport units of the at least two sets are disposed adjacent to each other so as to enable handing over of the sample rack from an upstream side to a downstream side in the sample analysis system , wherein the at least two sets include at least a first set and a second set provided downstream of the first set, each of which includes the measurement block and the transport unit , wherein the transport unit includes a first transport path along which the sample rack holding sample containers containing samples is transported from an upstream side to a downstream side and a second transport path along which the sample rack received from the first transport path is transported to the first and second measurement units in the measurement block, and the second transport path is configured to move the sample rack back and forth between the first and second measurement units to distribute the sample containers held on the sample rack to the first and second measurement units ; the sample analysis system further comprising a loader unit which is disposed on the upstream side of the most upstream transport unit , and on which the sample rack holding sample containers containing samples yet to be measured can be loaded. at least two sets each of which includes a measurement block including a first measurement unit and a second measurement unit configured to test a sample contained in a sample container , and each of which includes a transport unit for transporting a sample rack , the transport unit being disposed corresponding to the measurement block, wherein the transport units of the at least two sets are disposed adjacent to each other so as to enable handing over of the sample rack from an upstream side to a downstream side in the sample analysis system , wherein the at least two sets include at least a first set and a second set provided downstream of the first set, each of which includes the measurement block and the transport unit , wherein the transport unit includes a first transport path along which the sample rack holding sample containers containing samples is transported from an upstream side to a downstream side and a second transport path along which the sample rack received from the first transport path is transported to the first and second measurement units in the measurement block, and the second transport path is configured to move the sample rack back and forth between the first and second measurement units to distribute the sample containers held on the sample rack to the first and second measurement units ; the sample analysis system further comprising a loader unit which is disposed on the upstream side of the most upstream transport unit , and on which the sample rack holding sample containers containing samples yet to be measured can be loaded. <EOS>