Fractional excretion of urea:Ratio:XXX:Urine+Ser/Plas:Qn
fractional excretion of urea:ratio:xxx:urine+ser/plas:qn
Fractional excretion of urea Unsp time (U+S/P) [Ratio]
fractional excretion of urea unsp time (u+s/p) [ratio]