label: Mass spectrometry and tandem mass spectrometry (eg, MS, MS/MS, MALDI, MS-TOF, QTOF), non-drug analyte(s) not elsewhere specified, qualitative or quantitative, each specimen
label_lc: mass spectrometry and tandem mass spectrometry (eg, ms, ms/ms, maldi, ms-tof, qtof), non-drug analyte(s) not elsewhere specified, qualitative or quantitative, each specimen