label: Column chromatography, includes mass spectrometry, if performed (eg, HPLC, LC, LC/MS, LC/MS-MS, GC, GC/MS-MS, GC/MS, HPLC/MS), non-drug analyte(s) not elsewhere specified, qualitative or quantitative, each specimen
label_lc: column chromatography, includes mass spectrometry, if performed (eg, hplc, lc, lc/ms, lc/ms-ms, gc, gc/ms-ms, gc/ms, hplc/ms), non-drug analyte(s) not elsewhere specified, qualitative or quantitative, each specimen