Most commonly, rheumatoid factor is used as a blood test for the diagnosis of rheumatoid arthritis. Rheumatoid factor is present in about 80% of adults (but a much lower proportion of children) with rheumatoid arthritis.
Most flights originating from the US have a 'two piece' limit for luggage - you can check two bags, and you pay extra per bag. This applies whether the flight is domestic within the US or international. Most flights that originate from outside the US have a weight limit for total checked baggage - a miserly 20kg/44lbs if you're traveling in coach class, 30kg/66lbs for business class and 40kg/88lbs for first class.
100 ml (3.4 oz.) or smaller container permitted in carry-on. These items are also subject to limits in checked baggage. Each passenger can bring a maximum of 500 ml or 500 g per container, with a total net quantity not to exceed 2 L or 2 kg per person.Carry-on amounts must be counted against this total.es. 100 ml (3.4 oz.) or smaller container permitted in carry-on. These items are also subject to limits in checked baggage. Each passenger can bring a maximum of 500 ml or 500 g per container, with a total net quantity not to exceed 2 L or 2 kg per person. Carry-on amounts must be counted against this total.