Items for "control chart"

An Italian program of External Quality Control for chromogranin A (CgA) assay: performance evaluation of CgA determination

Background: Chromogranin A (CgA) is an acidic glycoprotein produced by many neuroendocrine cells and neurons...

Keywords: chromogranin A, control chart, enzyme-linked immunosorbent assay (ELISA), external quality control program, immunoradiometric assay (IRMA), Principal component analysis