Rheumatoid factor:ACnc:Pt:Ser/Plas:Qn
rheumatoid factor:acnc:pt:ser/plas:qn
Rheumatoid factor:Arbitrary concentration:To identify measures at a point in time:Serum/Plasma:Quantitative
rheumatoid factor:arbitrary concentration:to identify measures at a point in time:serum/plasma:quantitative