Fig. 4From: Determining the IgG concentrations in bovine colostrum and calf sera with a novel enzymatic assayCorrelation between RID determined IgG concentrations in colostrum and serum and glucose levels determined by STIGA in blind study. Scatter plot comparing IgG concentrations determined by RID (mg/mL) and by STIGA (determined as optical density OD 450) in blinded study: a, dairy colostrum (n = 20); b, dairy calf sera (n = 25); c, correlation coefficient between RID (mg/mL) and STIGA (OD 450) during the assay (squares – colostrum samples; diamonds – serum samples)Back to article page