Creatinine^12H post XXX challenge:SCnc:Pt:Ser/Plas:Qn
creatinine^12h post xxx challenge:scnc:pt:ser/plas:qn
Creatinine [Moles/volume] in Serum or Plasma --12 hours post XXX challenge
creatinine [moles/volume] in serum or plasma --12 hours post xxx challenge