Sodium/Potassium:SRto:Pt:Ser/Plas:Qn
sodium/potassium:srto:pt:ser/plas:qn
Sodium/Potassium:Substance Ratio:To identify measures at a point in time:Serum/Plasma:Quantitative
sodium/potassium:substance ratio:to identify measures at a point in time:serum/plasma:quantitative