Figure 4From: Common variants of the beta and gamma subunits of the epithelial sodium channel and their relation to plasma renin and aldosterone levels in essential hypertension Renin responses in postural and captopril tests. Plasma renin responses (median and interquartile ranges) during the postural and captopril challenge tests (stimulated values minus baseline values in both cases) in carriers and non-carriers of the variant ENaC alleles.Back to article page