Creatinine^6H post XXX challenge:SCnc:Pt:Ser/Plas:Qn
creatinine^6h post xxx challenge:scnc:pt:ser/plas:qn
Creatinine^6 hours post XXX challenge:Substance Concentration:To identify measures at a point in time:Serum/Plasma:Quantitative
creatinine^6 hours post xxx challenge:substance concentration:to identify measures at a point in time:serum/plasma:quantitative