Neonatal Screening for Congenital Adrenal Hyperplasia Using 17-Hydroxyprogesterone Assay in Filter Paper Blood Spots

Abstract
Screening of infants for congenital adrenal hyperplasia (CAH) using filter paper blood samples collected on the 5th day of life was performed with a radioimmunoassay for 17-hydroxyprogesterone without extraction with organic solvents. A total of 153,000 newborns were screened and 12 cases of CAH were detected (1:12,800). With recall levels related to gestational age, the recall rate could be lowered to 0.05%.

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