Fig. 3From: Mass spectrometry: an essential tool to be used in discrimination between causes of congenital adrenal hyperplasia, and its benefits versus radioimmunoassaya ROC curve of 21 deoxycortisol measured by LC MS/MS in diagnosis of 21OHD-CAH. b A dot plot chart for 21 deoxycortisol measured by LC-MS/MS in diagnosis of 21OHD-CAH shows that at a cutoff ≥ 6.4, specificity was 100% but sensitivity was 42.3%Back to article page