Premature Infants
31-35 weeks*: 235 ng/dL or less
Term infants*: 170 ng/dL or less
Pediatric
1 month to 12 months: 10 - 200 ng/dL
1 year to 4 years: 7 - 210 ng/dL
5 years to 9 years: 122 ng/dL or less
10 years to 13 years: 245 ng/dL or less
14 years to 17 years: 302 ng/dL or less
Males
18 years to 29 years: 119 ng/dL or less
30 years to 39 years: 135 ng/dL or less
40 years to 49 years: 76 ng/dL or less
50 years to 59 years: 42 ng/dL or less
Females
18 years to 29 years: 107 ng/dL or less
30 years to 39 years: 51 ng/dL or less
40 years to 49 years: 62 ng/dL or less
50 years to 66 years: 37 ng/dL or less