Nitrogen.nonprotein:MCnc:Pt:Ser/Plas:Qn
nitrogen.nonprotein:mcnc:pt:ser/plas:qn
Nitrogen.nonprotein:Mass Concentration:To identify measures at a point in time:Serum/Plasma:Quantitative
nitrogen.nonprotein:mass concentration:to identify measures at a point in time:serum/plasma:quantitative