An apparatus for noninvasive measurement, which noninvasively measures glucose in a subject optically through a measurement probe, comprising: a light source and a light detector both of which are connected to the measurement probe an adaptation device which has a shape similar to the measurement probe and a control unit which performs noninvasive measurement by controlling the light source and the light detector, and also ahead of the noninvasive measurement, controls the adaptation device such that the adaptation device is brought into contact with a skin part of a subj ect for stretching the skin part of the subj ect under a pressure that is higher than a pressure per unit area applied by the measurement probe during the noninvasive measurement, and a corresponding method.
