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 prefers areas with cover such as reeds and tall grasses and proximity to water bodies, such as wetlands and savannahs. It is rare in northern Africa and the Sahel, but widespread in southern Africa.