Breadcrumb Home Physicians Laboratory Testing Biochemical Genetics & Mass Spectrometry Tests Biochemical Genetics & Mass Spectrometry Tests Menu Main nav children 25 - Hydroxyvitamin D (D2 and D3 ) Levels by LCMSMS Clinical Urine Drug Screen with Reflex to Confirmation by LCMSMS Drug Confirmation, Quantitative, by LCMSMS Opiate Confirmation, Quantitative, by LCMSMS Urine Drug Screen, Comprehensive by LCMSMS 25 - HYDROXYVITAMIN D ( D2 and D3 ) LEVELS BY LCMSMS CLINICAL URINE DRUG SCREEN WITH REFLEX TO CONFIRMATION BY LCMSMS DRUG CONFIRMATION, QUANTITATIVE BY LCMSMS URINE DRUG SCREEN, COMPREHENSIVE BY LCMSMS