Nanograms per milliliter, abbreviated ng/mL, is the unit of measure most commonly used to express medicine testing cut-off levels and quantitative test results in urine and oral fluid. A nanogram is 10-9 grams.
What is 50ml mL?
What Is 50 ng/mL? Urine tests are more common for medicine detection. 50 nanograms per milliliter is usual cut off level for pre-employment THC test. This is the point under which urine tests are considered negative, and above which the tests are positive.