To provide a waste-avoided efficient clinical examination system, capable of checking the measuring data obtained by an analyzer, on the basis of the accumulation data of a precision control specimen and reporting valuable examination data of higher quality to a medical examination and treatment office.

With respect to the abnormality, which is not cleared by the independent check of precision control, of the analyzer, an estimate becoming out of a control SD range from a precision control reference value is calculated from an estimate straight line, on the basis of the accumulation data of the precision control specimen, by controlling the precision control specimen from the analyzer and a warning is reported to a user before the analyzer becomes abnormal to ensure the measuring precision of a patient specimen data and the reliability of data, simultaneously with the holding of the analyzer to a stable state.