Progesterone/Estradiol:MRto:Pt:Ser/Plas:Qn
progesterone/estradiol:mrto:pt:ser/plas:qn
Progesterone/Estradiol:Mass Ratio:To identify measures at a point in time:Serum/Plasma:Quantitative
progesterone/estradiol:mass ratio:to identify measures at a point in time:serum/plasma:quantitative