Day: July 2, 2018

How Far Back Can A Urine Test Detect Drugs


Urine Drug Testing or UDT is one of the most known and commonly used drug testing methods of today. UDT consists of two types of tests – the screening and the confirmatory tests. The screening test is used to find and detect the main drug or metabolite. The confirmatory test is used for finding a specific type of drug when it is needed. Screening tests use immunoassay, while confirmatory tests used chromatography or mass spectrometry or liquid chromatography. Let’s see in more detail, how far back a urine test can detect drugs.

Detection Periods Of Various Types Of Drugs By An Urine Test

Different drugs have different detection times. Following are some examples :

  • Amphetamines : 2-5 Days
  • Benzodiazepines : 7-10 Days
  • Cannabinoids (Marijuana) : 5-60 Days
  • Cocaine : 1-4 Days
  • Steroids (Anabolic Oral) : 14-28 Days
  • Propoxyphene : 6 hours to 2 Days
  • Opiates : 5-7 Days

These detection time ranges are provided as general guidelines, and thus these should not be confused with concrete time frames.

Inference Of Medications In The Urine Drug Tests

There can be various medications available that may contain drugs that will ring the urine tests positive. For example, drugs such as cocaine are usually not prescribed by doctors, unless it is used to treat bleeding from the eye or nose. Therefore, such medication should be well documented, as it will turn the urine test positive for drugs.

Another example would be some prescribed diet pills containing one of the two – either amphetamine or methamphetamine. Even Parkinson’s Disease uses drugs that contain methamphetamine, and thus these drugs should be well documented. This is because, naturally these type of drugs will make urine drug tests positive, and therefore proper proof should be obtained. Many people even use dishonest measures like using the urine of another person to pass a drug test – as this is an easy way to get fake pee.

Also, it should be known that intake of these drugs for multiple times can make the results positive. Therefore, if you’re living with someone who is using drugs – there are low chances of getting a positive urine drug test report, by just a passive exposure.…