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.
This is the reason that drug tests, namely urine tests, look for 9-carboxy-THC. Many of the following numbers are estimates. Typical Periods of Time that Marijuana Use May be Detectedâ¡. â¡ Some private companies may use hair tests to detect possible marijuana use.The detection period for 9-carboxy-THC in urine may be as long as three months in extremely heavy users. Research on saliva tests indicated that they may be able to detect THC up to eight hours after ingestion but they aren't widely used.