Weight-for-age is usually used to monitor growth. It is particularly useful in small infants who normally gain weight fast. Normal weight gain suggests that the infant is healthy and growing normally. Failure to gain weight normally is often the earliest sign of illness or malnutrition (i.e. undernutrition). Therefore, a child’s weight should be measured at every clinic visit in order to monitor growth.
Weight should be measured and plotted on a growth chart at every clinic visit.