Is an at home drug test as accurate as a lab test?
No. No drug test of this type is 100\% accurate. There are several factors that can make the test results negative even though the person is abusing drugs.
How do urine drug test strips work?
A drug, if present in the urine specimen below its cut-off concentration, will not saturate the binding sites of its specific antibody. The antibody will then react with the drug-protein conjugate and a visible colored line will show up in the test line region of the specific drug strip.
What if my drug test comes back inconclusive?
Inconclusive/invalid– this means that the test detected no amount of the drugs tested for. With an inconclusive result, your employer may choose to have you retake a drug test.
Why did my drug test come back inconclusive?
Drug test results can be inconclusive if the sample is diluted. An inconclusive or diluted drug test result could be a sign that the sample was tampered with, raising suspicion of whether the employee is attempting to avoid detection of drugs by “cleaning out their system.”
What is a positive drug test?
If your results are positive, it means one or more drugs were found in your body above an established level. However, false positives can happen. So if your first test shows that you have drugs in your system, you will have further testing to figure out whether or not you are actually taking a certain drug or drugs.
How can you make a drug test invalid?
Adding chemicals to their sample urine Some known chemicals include, salt, soap, bleach, peroxide and eye drops. Most drug testing machines have the ability to detect specimens with chemicals, tagging them as invalid. However, not all adulterants are detected.
Is a faint line on a drug test always negative?
Most at home drug tests explicitly state that a faint line is a negative result, but customers still assume that it means there is some level of the drug present. Faint Lines on Drug Tests Are Negative Faint lines are always negative.
Do all lines on a drug test mean you used drugs?
No line at all indicates drug use. Parents and drug-using employees often become unnerved, however, when the line is so faint that it’s nearly non-existent. Since home drug test kits are strictly pass or fail, there is no in-between. When reading the test result, there should be two colored lines present.
Can a drug test result be negative with a T line?
The result can only be NEGATIVE or POSITIVE. Any line, no matter how light or dark, in the “T” area of a drug test indicates a negative drug screen result. The possible shades of colored lines in the T Region may vary from person to person.
What does a negative negative drug test look like?
NEGATIVE Drug Test Results. Two lines of any color intensity appear. A colored line appears in the Control Region (C) and a colored line appears in the Test Region (T). Even if the line that appears is faint, the result should be considered negative. The possible shades of colored lines in the T Region may vary.