F2-Isoprostanes/Creatinine:MRto:Pt:Urine:Qn
f2-isoprostanes/creatinine:mrto:pt:urine:qn
F2-Isoprostanes/Creatinine:Mass Ratio:To identify measures at a point in time:Urine:Quantitative
f2-isoprostanes/creatinine:mass ratio:to identify measures at a point in time:urine:quantitative