Effect of gender, birth weight and gestational age on serum 17-hydroxyprogesterone concentration and distribution among neonates in Saudi Arabia

Indian J Pediatr. Sep-Oct 1995;62(5):605-9. doi: 10.1007/BF02761890.


Blood samples from 813 newborns were spotted on to filter paper and the 17-hydroxyprogesterone concentration was measured using the Delfia (R) fluorometric immunoassay. The median, mean, and standard deviation (SD) for the total population were 20, 21 and (11) nmol/L respectively. Males had significantly higher levels than females with median, mean and (SD) of 22, 22 and (12) nmol/L. Similarly, low birth weight babies were found to have significantly higher levels than normal birth weight babies with median, mean and (SD) of 21, 24 (12) nmol/L. Preterm babies were also found to have significantly higher levels than full term babies, with median, mean and (SD) of 25, 29 (16) nmol/L. As experienced elsewhere, those factors should be taken into consideration when considering a cut-off point in any neonatal screening program for congenital adrenal hyperplasia.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • 17-alpha-Hydroxyprogesterone / blood*
  • Adrenal Hyperplasia, Congenital / blood
  • Adrenal Hyperplasia, Congenital / diagnosis*
  • Birth Weight*
  • Female
  • Gestational Age*
  • Humans
  • Infant, Newborn
  • Male
  • Neonatal Screening*
  • Reference Values
  • Saudi Arabia


  • 17-alpha-Hydroxyprogesterone