Standards & Tools

Purpose: Accurate gestational-age estimation in early pregnancy
Age range: Gestational weeks 8 to 14 

Purpose: Assess early pregnancy fetal size (crown-rump length)
Age range: Gestational weeks 8 to 14

Purpose: Assess symphysis-fundal height 
Age range: Gestational week 15 until term

Purpose: Assess fetal anthropometric growth measurements
Age range: Gestational week 14 until term

Purpose: Provide gestational age-specific normative centiles for umbilical artery Doppler indices
Age range: Gestational week 24 until term

Purpose: Assess maternal weight gain during pregnancy
Age range: gestational week 15 until term

Purpose: Assess size at birth (within 24 hours) for very preterm newborns
Age range: At birth, born between gestational weeks 24 and 33

Purpose: Assess size at birth (within 24 hours) for newborns
Age range: At birth, born between gestational weeks 33 and 43

Purpose: Neurodevelopment assessment
Age range: 22 to 30 months

Purpose: Assess the postnatal growth of preterm infants (born between gestational weeks 26 and 37)
Age range: From birth until 64 weeks postmenstrual age