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