Fig. 3. Clinical validation of sweat chloride for the diagnosis of cystic fibrosis. (A and B) Comparison of CA–cysteine-based and standard clinical mercuric nitrate titration methods to determine sweat chloride for the diagnosis of cystic fibrosis based on 13 volunteers, where correlation is measured by the intraclass correlation coefficient (A) and agreement is measured by a Bland & Altman plot (B).
