Drug Abuse Test – Positive, Negative

A positive initial drug screening means that the person tested has a substance in his or her body that falls into one of the drug classes and is above the established cutoff level.

If secondary testing confirms a positive result, it means that the person has indeed taken this drug. Interpretation of when and how much drug was consumed can be challenging because the concentration of many drugs varies, as do people’s rates of metabolism.

If testing reveals no drugs, or drugs in amounts below the established cutoffs, then the results are usually reported as “not detected” or “none detected.” A negative result does not necessarily mean that the person did not take a drug at some point. The drug may be present but below the established cutoff, the drug may have been already metabolized and eliminated from the body, or the test method does not detect the particular drug present in the sample.

Interpretation of sports testing results for hormones and steroids should be done only by laboratory professionals who are familiar with particular test methods.

A negative result indicates that there is a “normal” amount of the substance present in the body. Positive results reflect the presence of the substance above and beyond what is normally produced by the athlete’s body. These results can be complicated by the fact that each person will have his or her own normal baseline concentration and will produce varying amounts of hormones and steroids, depending upon the circumstances.

Keywords: Drug Test; Drugs of Abuse Screen; Sports Doping Tests; Substance Abuse Testing; Tox Screen; Toxicology Screen; Urine Drug Testing

* The Content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.