Fig. 6From: Experimental vitamin B12 deficiency in a human subject: a longitudinal investigation of the performance of the holotranscobalamin (HoloTC, Active-B12) immunoassayCumulative change and cut-off values. In a, for each measurement for each analyte, cumulative change (%) = 100 × [(initial value − current value)/initial value]. In b, for each measurement for each analyte, % cut-off value = 100 × (measured value/laboratory cut-off limit value)Back to article page