In those with symptoms and clinical signs of rheumatoid arthritis, the presence of significant concentrations of RF indicates that it is likely that they have RA. Higher levels of RF generally correlate with more severe disease and a poorer prognosis. A negative RF test does not rule out RA.
Macrosomia (big baby). The average newborn weight is about 3.4 kilograms (kg) / 7 pounds (lb) 8 ounces (oz). Babies weighing more than 4.5kg/ 9lb 15oz at birth are considered much larger than average or macrosomic, which literally means of large body.It's very difficult to determine whether a baby is truly macrosomic while still in the uterus (womb) - only the post-birth weight confirms this.abies weighing more than 4.5kg/ 9lb 15oz at birth are considered much larger than average or macrosomic, which literally means of large body. It's very difficult to determine whether a baby is truly macrosomic while still in the uterus (womb) - only the post-birth weight confirms this.
(304 ratings). The average birth weight of a baby born in Britain today is 3.3kg (7lb 5oz), but that's just maths. Weight can vary widely, between about 2.5kg (5lb 8oz) and 4.5kg (9lb 14oz), with girls tending to be around 300g (10oz) lighter than boys. Genetics also play a part in how much your child weighs.Look at your baby pictures.eight can vary widely, between about 2.5kg (5lb 8oz) and 4.5kg (9lb 14oz), with girls tending to be around 300g (10oz) lighter than boys. Genetics also play a part in how much your child weighs.