Potassium^pre dialysis:SCnc:Pt:Ser/Plas:Qn
potassium^pre dialysis:scnc:pt:ser/plas:qn
Potassium^pre dialysis:Substance Concentration:To identify measures at a point in time:Serum/Plasma:Quantitative
potassium^pre dialysis:substance concentration:to identify measures at a point in time:serum/plasma:quantitative