Based on gestational age, neonates are classified as (2) Preterm: < 34 weeks gestation Late preterm: 34 to 36 6/7 weeks Early term: 37 0/7 weeks through 38 6/7 weeks Full term: 39 0/7 weeks through 40 6/7 weeks Late term: 41 0/7 weeks through 41 6/7 weeks Postterm: ≥ 42 0/7 weeks and beyond General references 1.