Creatinine^1H pre XXX challenge:SCnc:Pt:Ser/Plas:Qn
creatinine^1h pre xxx challenge:scnc:pt:ser/plas:qn
Creatinine [Moles/volume] in Serum or Plasma --1 hour pre XXX challenge
creatinine [moles/volume] in serum or plasma --1 hour pre xxx challenge