A false positive drug test means a test indicates something while there is no use. With rapid screening tests this sometimes happens, because some medicines and substances can register. A lab therefore confirms a positive screen with a more specific method.
Which medicines and foods can influence a result?
Various substances have been linked in the literature to false positive rapid tests. These are examples, not a complete list.
- Some nasal sprays and weight-loss products can register on an amphetamine screen.
- Certain painkillers and cough remedies have been linked to opiate or other screens.
- A few antidepressants and antibiotics have been mentioned in research with abnormal screen results.
Why a lab makes the difference
A rapid test is a first indication. A lab uses a confirmation method that specifically detects the substance, so a cross-reaction is filtered out. That way a borderline case becomes a reliable result. More on the technique is at cut-off values and home test versus lab test. The overview of methods is in which drug test fits you.
Every test result at Zuivertest includes a professional assessment from a BIG-registered doctor. For treatment decisions, discuss your results with your GP.
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