Fractional excretion of phosphate:Ratio:XXX:Urine+Ser/Plas:Qn
fractional excretion of phosphate:ratio:xxx:urine+ser/plas:qn
Fractional excretion of phosphate:Ratio:Not specified:Urine+Serum/Plasma:Quantitative
fractional excretion of phosphate:ratio:not specified:urine+serum/plasma:quantitative