Learning Center

Wondering does cranberry juice clean your system to pass a drug test? Find out why this common myth is scientifically baseless.

Will your drug test check for nicotine? Learn about cotinine, the stable metabolite they look for in urine, blood, saliva, and hair, and how long it's detectable.

Worried about drug test compliance? Get the facts on how vaping THC, nicotine, and CBD may cause a positive test and find reliable home testing solutions.

A UTI can affect a drug test. Learn how prescription antibiotics cause false positives and the crucial steps you must take to protect your results.

What is Novocaine? Learn about this historic local anesthetic, how it blocks pain signals, its short duration of action, and why modern drugs like lidocaine replaced it.

Understand how long THC stays in the blood after cannabis use. Learn about the short impairment window (2-6 hours) for occasional users and why it matters for blood drug tests.

The science of how to pass a hair drug test for weed. Understand the 90-day detection, why detox shampoos fail, and the value of an at-home pre-test.

Can vinegar help you pass a drug test? Don't fall for the myth. Learn why this common "detox" method is a dangerous mistake.

Debunking the myth: does cranberry juice help with UTIs? We explore the science, separating what works for prevention from dangerous treatment myths.

Don't fail your drug test over a bagel. We separate myth from fact on whether poppy seeds cause a positive result for opiates.

Learn why checking urine temperature for a drug test is the most critical step to ensure a sample's integrity and prevent tampering or substitution.

Wondering ‘Will Quest Diagnostics call if I fail a drug test?’ Learn the communication chain from Quest Diagnostics to the MRO and your employer.