Potassium^2nd specimen:SCnc:Pt:Ser/Plas:Qn
potassium^2nd specimen:scnc:pt:ser/plas:qn
Potassium^2nd specimen:Substance Concentration:To identify measures at a point in time:Serum/Plasma:Quantitative
potassium^2nd specimen:substance concentration:to identify measures at a point in time:serum/plasma:quantitative