Creatinine^30M pre XXX challenge:MCnc:Pt:Ser/Plas:Qn
creatinine^30m pre xxx challenge:mcnc:pt:ser/plas:qn
Creatinine [Mass/volume] in Serum or Plasma --30 minutes pre XXX challenge
creatinine [mass/volume] in serum or plasma --30 minutes pre xxx challenge