Many First Check® Home Drug testing products are more than 99 percent accurate in detecting specific drugs according to the designated cut-off levels. However, if a more sensitive test is administered, there is a chance of testing positive if drugs are present in urine.
Can home drug tests give false positives?
Test results may be false positives. Some drug tests may mistake traces of legal painkillers containing ibuprofen or naproxen for signs of marijuana use. Sinus or allergy medicines may show up as amphetamines in drug tests.11 feb 2021
What is the most accurate drug test?
Blood testing is expensive and invasive, but is the most reliable for determining if the individual is under the influence of drugs or alcohol right now. Hair testing has the longest detection window, nearly 90 days, and is the least invasive method of all, but also has the highest cost.
What does a random drug test check for?
Urine drug testing screens for multiple substances. Urine drug testing may screen for multiple substances, including amphetamines, methamphetamines, benzodiazepines, barbiturates, marijuana, cocaine, opiates, PCP, methadone, nicotine, and alcohol.28 dic 2018