NeoMass CAH Multilevel DBS Calibrators are used for the calibration of the analysis-system to determine the unknown concentration of analytes (Androstenedione, Cortisol, 11-Deoxycortisol, 21-Deoxycortisol, 17-Hydroxyprogesterone and 21-Hydroxyprogesterone) in Dried Blood Spots (DBS). These DBS calibrators are prepared by using human blood and are available as a calibrator set with 8 levels, including a blank. The calibrators are handled and used in the same way as newborn DBS samples.