Drug Testing Category

What Does Invalid Drug Test Mean

February 24, 2025 | Drug Testing | Bella Sungkawa

An invalid drug test result indicates that the test was inconclusive due to various factors, such as sample contamination or testing errors. It means the test cannot reliably determine the presence or absence of drugs.

What Does Non Negative Mean In A Drug Test

A non‑negative result in a drug test indicates that no prohibited substances were detected above the laboratory’s cutoff level. It is commonly reported as “negative” and is used in employment, legal, and medical contexts to confirm the absence of drug use.