Drug Testing Information
What Do They Test For?
What Are the Types of Drug Tests?
There are four primary types of drug sample: urine, hair, saliva, and blood. Most common is the urine test which has the benefit of being inexpensive and less intrusive than the blood test.
Drug Detection Periods
The amount of time any drug can be detected in one’s system can vary from person to person and test to test. It certainly can also depend on the amount of the drug taken and when it was taken relative to the time of the test. Keeping in mind that there is no 100% hard and fast rule for how long a drug will be in one’s system, listed below are some general guidelines on the drug test detection time for various drugs.
False positive test results can be attributed to human error and sample contamination. In addition, there are a number of controlled and uncontrolled substances that will cause a false positive result; these are some of the reasons why labs will immediately split your specimen into two samples. See our False Positive Information to find out more.