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Table 1 Criteria of CAH mass screening in Tokyo

From: Newborn screening for congenital adrenal hyperplasia in Tokyo, Japan from 1989 to 2013: a retrospective population-based study

<Criteria according to the gestational age >

 Gestational age at birth (weeks)a

≤29

30–34

35–36

37–

 Corrected gestational age (weeks)b

≤31

32–35

36–37

38–

<Criteria according to weight >c,d

    

 Body weight (g)

≤999

1,000–1,999

2,000–2,499

2,500–

 Cutoff level of 17-OHP [nmol/L]

Reteste

60

45

24

15

Positivef

60

60

60

  1. aSamples collected before the age of 7 days
  2. bSamples collected at the age of 7 days or after
  3. c1st test: Body weight = Birth weight. 2nd test and after: Body weight = Corrected body weight calculated by the formula as below. Corrected body weight at test (g) = birth weight (g) + (age at test – 7) × 20 (g)
  4. dFor infants born small or large for gestational age, either the criteria of gestational age (corrected gestational age) or body weight was applied, whichever was lower value
  5. erecall for the second (or the third) test of the screening
  6. frefer to hospitals for further endocrinological examinations