2,4-Dinitrophenylhydrazine reacting substances:PrThr:Pt:Urine:Ord
2,4-dinitrophenylhydrazine reacting substances:prthr:pt:urine:ord
2,4-Dinitrophenylhydrazine reacting substances:Presence or Threshold:To identify measures at a point in time:Urine:Ordinal
2,4-dinitrophenylhydrazine reacting substances:presence or threshold:to identify measures at a point in time:urine:ordinal