Fig. 3From: Determining the IgG concentrations in bovine colostrum and calf sera with a novel enzymatic assayCorrelation between RID determined IgG concentrations in serum and glucose levels determined by STIGA. Scatter plot comparing IgG concentrations determined by RID (mg/mL) and by STIGA (determined as optical density OD 450) in: a, dairy calf sera (n = 83); b, beef calf sera (n = 84)Back to article page