Norepinephrine/Creatinine:SRto:XXX:Urine:Qn
norepinephrine/creatinine:srto:xxx:urine:qn
Norepinephrine/Creatinine [Molar ratio] in Urine collected for unspecified duration
norepinephrine/creatinine [molar ratio] in urine collected for unspecified duration