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Table 1 Rate of altered 17-OHP results on initial CAH screeninga stratified by birth weight tier in the general population tested until 40 days of age in the state of Rio Grande do Sul, Brazil

From: Neonatal screening for congenital adrenal hyperplasia in Southern Brazil: a population based study with 108,409 infants

Birth weight tier

Number

17 OHP (>P99 or two times P99)

n (%)

≤1500 g

1071

35 (3.3%)

1501–2000 g

1773

71 (4.0%)

2001–2500 g

6462

106 (1.6%)

≥2501 g

95,431

302 (0.3%)

Total

104,737

514 (0.5%)

  1. a17-OHP diagnostic cut-off levels: birth weight ≤ 1500 g: 110.4 ng/mL; birth weight 1501 to 2000 g: 43.0 ng/mL; birth weight 2001 to 2500 g: 28.2 ng/mL; and birth weight weight > 2500 g: 15.1 ng/mL
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BMC Pediatrics

ISSN: 1471-2431

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