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 is a slender, medium-sized cat; it stands 54â62 centimetres (21â24 in) at the shoulder and weighs 8â18 kilograms (18â40 lb), but females tend to be lighter. The head-and-body length is typically between 67 and 100 centimetres (26 and 39 in).