Why Drug Test?
What are adulterants?
How does hair testing work?
Which drugs are commonly tested for using hair?
How is hair analysis performed in the laboratory?
Do I have to wait the full amount of time before reading my results?
Can the test results be read after the suggested number of minutes?
The test line is very faint and the control line is very strong at the suggested minute read time. What does this mean?
Does a negative result indicate drug-free urine?
When the specimen sample is added to the test, red/pink fluid can be seen migrating up the membrane. Is this normal?
How does one know that the test has been performed properly?
A negative result is read when two distinct red lines appear, one in the control region (C) and another in the test region (T). Do the two lines need to be of the same intensity?
Can the result be read before the specified read time?
Does the specimen need to be sent to a laboratory for confirmation?
Can the test be used beyond the expiration date?
What are the signs and symptoms of drug abuse?
Will passive inhalation of marijuana smoke cause a positive test result?
What is Oxycodone?
Random Selection Program
Creatinine and New Use of Marijuana
Urine Collection Guidelines for Drug Testing
QED Test Frequently Asked Questions
QED Test Frequently Asked Questions (Continued)
Reimbursement Information
Specimen Questions
Test Procedure Questions


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