The present application relates to an adequacy assessment method and system. The method comprises: obtaining biochemical detection data, and extracting latest assay data of a periodic assay record; calculating a body fluid volume according to the latest assay data; calculating a urea clearance index according to the calculated body fluid volume and a specified parameter; and displaying and outputting the urea clearance index of an adequacy assessment. Compared with the prior art, in the present application, biochemical detection data of a patient before dialysis is collected by one time, automatic assessment of each dialysis is achieved, multiple biochemical detections before and after dialysis do not rely on blood collection, the burden of multiple blood collections and blood losses of the patient is not aggravated, and dialysis adequacy is monitored and therapeutic schemes are adjusted in real time in a dialysis process; moreover, the method and the system do not rely on dialysis machines and peripheral auxiliary equipment.
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