How long to know if you passed a drug test?
Negative results are usually received within 24 hours; however, a non-negative screen will require further testing that may take a few days up to one week. If the initial screen is negative, a medical review officer (MRO) will typically contact the employer with the results.
What is a cut off level in drug testing?
The laboratory analysis measures the amount of the drug metabolite in the specimen at the time of testing. Using the established cut off level means that a small trace of the metabolite may be present in a specimen and the test result reported as negative. Every benefit of the doubt is given to the donor.
How do I know if my drug test is positive?
A red or pink colored line next to the word “Control” and NO line next to the word “Drug” indicated a Preliminary Positive for that drug. If after 10 minutes NO line appears next to the word “Control,” the result in Invalid.
Why are drug test results taking so long?
Positive Initial Results Take Time to Confirm The good news for employers is that results are presented much more quickly when test results are negative. But as the MRO process is strongly regulated and must be performed a precise way, drug test results do occasionally take several days to confirm.
Are lab drug tests more sensitive?
Lab-based drug tests are more accurate. We like to say they are more rigorous, more involved, and more defensible in a court of law, all of which are elements certain organizations must consider, particularly heavily regulated industries, like the DOT.
How long does it take for a urine test to come back from the lab?
Drug test results typically take 24 to 48 hours, depending on the type of test being performed (e.g., urine, hair or DOT).
Is it good to not hear back after a drug test?
For the most part, you should hear back in a week. If you result in negative diluted (drink too much water), then you hear back the next day and usually get a second chance to retake within 24 hours. Not long if they need you.