Summary: Home drug tests will not tell you how a drug was ingested but it will indicate drugs in the system. Get an explanation of home drug test results with tips from a Certified Medical Assistant in this free drug testing video.
Taylor Smith, CMA, is a multifaceted Certified Medical Assistant. In addition to the standard training needed for this credential and the experience that comes from working in the...read more
"The purpose of executing an in home urine drug screen, is to detect either the presence or absence of metabolites of these drugs in the system. What that means is regardless of the way a person would take an illegal drug into their body, the body is going to process it and break it down, much like it would a prescribe medication, or any other chemical. And that means that some residue or residual of that product is going to be left in the urine once it is metabolized, hence the term metabolite. So this test is designed to pin point any metabolites of these specific drugs, and to produce a visual result on the test agent once the urines been tested and the metabolites been screened. It's complicated process in terms of a laboratory function. But simply it's just looking for a bi-product of a drug, and using that presence of that bi-product to determine what the test result is going to produce. It's similar to a pregnancy test, except the pregnancy test is going to test for particular hormones. It's the same concept, but a different body chemical. "
eHow Article: Home Drug Test Result Explanation