In the United States, a graduate from an accredited PA program must pass the NCCPA-administered Physician Assistant National Certifying Exam before becoming a PA-C; this certification is required for licensure in all states.
Small for gestational age (SGA) babies are those whose birth weight lies below the 10th percentile for that gestational age. Low birth weight (LBW), is sometimes used to define a baby that weighs less than 5 lb 8 oz (2500 g) regardless of gestational age.
A baby born within the normal range of mass for that gestational age is known as appropriate for gestational age (AGA).. Doctors often use a percentile calculator to assess an infant's weight and height percentile in comparison to national averages.