Normetanephrine.free/Creatinine:SRto:Pt:Ser/Plas:Qn
normetanephrine.free/creatinine:srto:pt:ser/plas:qn
Normetanephrine Free/Creatinine [Molar ratio] in Serum or Plasma
normetanephrine free/creatinine [molar ratio] in serum or plasma