Evaluation of Common Adulterants in Morphine Urine Drug ...

icals to a urine sample to change the test results (11). Some of the most common confounding materials are soap, lemon juice, household bleaching fluid, carbon copy pa-per, baking soda, oral contraceptives, and more recently, chemical fertilizer (7,8,12-15). Measuring the specific grav-ity of the sample with a refract meter can identify the ad- ................
................