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.
What is considered the normal weight for a newborn? The normal weight of a baby who reaches full term between 37 and 40 weeks is 2.7â4.1kg (6 â 9 lbs), with an average weight of 3.5kg (7.7 lbs). A baby who weighs less than 2.5kg (5.5 lbs) is considered to have a low birth weight.bout half of all twins and 90% of all triplets are born prematurely, before 37 weeks, and have a low birth weight of under 2.5kg. A baby who weighs more than 4kg (8.8lbs) at birth may be referred to as macrosomia, which means the baby is larger than normal.