A ten-panel urine drug test detects the presence of 10 drug metabolites including amphetamines, methamphetamines, barbiturates, benzodiazepines, marijuana, cocaine, opiates, phencyclidine, methadone, and propoxyphene.
It is usually required to employees with a drug testing policy employers. Such laboratory test costs around $49.
What Are the Cut-off Levels for Each Drug Metabolite?
Cut-off levels are the minimum concentrations of drug metabolites in urine samples.
- amphetamine, it is 1,000 ng/mL;
- barbiturate, 300 ng/mL;
- benzodiazepine, 300 ng/mL;
- cocaine, 300 ng/mL;
- THC content of marijuana, 50 ng/mL;
- methamphetamine, 1,000 mg/mL;
- methadone, 300 ng/mL;
- opiates, 2,000 ng/mL;
- phencyclidine, 25 ng/mL;
- propoxyphene, 300 ng/mL.
Ng and mL stand for nanograms and milliliters respectively.
If the drug test comes out positive, the person will be asked to take a confirmation test. It usually requires a lower concentration than the first test.
The drug test takes about one to two business days after the collection of specimen. The confirmation test takes two to three business days after the collection.
How Long Do Drug Metabolites Show Up on a Urine Sample?
If you take drugs and you’re worried, know that all of the previously stated drug metabolites stay in your urine for one to four days, except THC in marijuana which stays up to 28 days.
Before taking the drug test, it is strongly suggested that you flush your system internally of drugs. If possible, don’t take them if you are expecting a drug test. Drink plenty of water, and urinate regularly. Also, drink diuretics such as tea, multivitamins, and coffee which stimulate urination preventing a build-up of metabolites in your urine.
Show Your Prescription.
If you are currently taking drugs as prescribed by your personal doctor and are worried that it might interfere with the drug test, present your prescription to the doctor facilitating the laboratory test.