05/28/2026
Be it at a lab, or at home, drug test cutoff levels often confuse people. This qualitative threshold actually describes whether the urine sample is above or below a certain level. The most common cutoff level (e.g. for employment) is at 50 ng/ml, but confirmatory tests are even stricter. On the other hand, a higher cutoff (100 ng/ml) serves as a great tool for people who want to cut back after some heavy smoking periods.
Learn more about the 20 vs 50 vs 100 ng/ml difference in our in-depth guide below:
Read on to learn the differences in cutoff levels of THC home tests, and learn how to pick the THC home test for your situation.