Why did your HP Wi-Fi printer go offline? A: A Hewlett-Packard printer connected to a Wi-Fi network can go offline for many reasons, including interference with the wireless connection to the printer ... Full Answer > Filed Under:
A drug test for marijuana is the analysis of a biological specimen from your body, using urine, blood, hair, sweat or saliva samples to determine how much of the drug is in your system. Testing for marijuana checks for levels of the active ingredient THC, or more commonly for its metabolite THC-COOH.
For frequent or heavy marijuana users, their urine tests may show up positive for up to 100 days after their last use, and blood tests will show the presence of THC for up to one week. THC-COOH builds up in the body each time marijuana is used, and thus takes even more time to decline, according to Norml.