Fig. 4From: Comparison of three different methods for the quantification of equine insulinInsulin concentrations measured in stimulated blood samples from OGT procedure by ELISA, RIA and CLIA. Data were analyzed by Wilcoxon matched-pairs rank test. a ELISA and RIA (n = 11) b ELISA and CLIA (n = 11) c RIA and CLIA (n = 19). *p < 0.05, **p < 0.01, ***p < 0.001Back to article page