Low bih weight is defined as
Low bih weight (LBW) neonate- A neonate weighing less than 2500g at bih irrespective of the gestational age. Very low bihweight (VLBW) neonate- A neonate weighing leas than 1500g at bih irrespective of the gestational age. Extremely low bih weight (ELBW) neonate- A neonate weighing leas than 1000g at bih irrespective of the gestational age. Reference : page 125 Ghai Essential Pediatrics 8th edition
Weight < 2.5 kg
Weight < 2.0 kg
Weight < 1.5 kg
Weight < 10 percentile for their gastational age
New born infants