Rheumatoid factor (RF) is a blood test that measures the amount of the RF antibody in the blood.
Weight ranges from about 7 to 12 kilograms (15 to 26 lb) in females, and from 9 to 18 kilograms (20 to 40 lb) in males.[4] Where does a serval live? The Serval lives in Africa.
The Serval has a relatively wide range throughout central and southern parts of Africa where it is most commonly found in reed beds and rushes that fringe wetlands and in grasslands that have a good source of water.