08/06/2026
Not every detectable amount of a drug results in a positive test.
Cutoff levels are established thresholds that help laboratories distinguish clinically meaningful results from trace or incidental amounts. They play an important role in reducing false positives, improving consistency, and ensuring providers receive reliable information to support patient care.
Understanding how cutoff levels work can make interpreting toxicology reports more meaningful—and highlights why confirmation testing is an essential part of the testing process.
At Radeas, we're committed to providing accurate, reliable toxicology testing that helps providers make informed clinical decisions.