1,2,2-Trimethylpropyl methylphosphonate [Mass/volume] in Urine, TMPA Ur-mCnc, 1,2,2-Trimethylpropyl methylphosphonate:Mass Concentration:To identify measures at a point in time:Urine:Quantitative, 1,2,2-Trimethylpropyl methylphosphonate (U) [Mass/Vol]