Frequently asked questions
Straight answers about THC testing, our tools, and the guide.
It produces an evidence-based estimate, not a guarantee. The model uses published pharmacokinetic ranges adjusted for your inputs — but individual metabolism varies, so we always recommend confirming with an at-home test before the real one.
No. Water can briefly dilute a urine sample, but labs flag dilute samples and retest. It does not speed up how fast your body clears stored metabolites. The guide covers what actually moves the timeline.
Anywhere from about 1 day to 30+ days depending on test type, how often you use, and your body composition. Use the calculator for a personalized window rather than a generic range.
In many states, yes — though a growing number now protect off-duty use. Our state law database shows the status and employment protections for all 50 states plus D.C.
They do not reliably beat a lab test, and some can cause harm or a flagged sample. We tested the popular claims against the research in the guide.
Yes. Discreet billing descriptor, instant digital download, no physical mail, and we never sell your data.
Urine, saliva, hair, and blood — each has a very different detection window, and the tool models all four.
No. Everything here is educational information to help you understand the science and your options. For medical or legal decisions, consult a qualified professional.