false positive

A false positive is a test result that incorrectly indicates the presence of a condition or substance when, in reality, it is absent.

Description: False positive results can occur in various types of tests, including medical diagnostic tests, laboratory tests, and drug screens. In the context of drug testing, a false positive occurs when a test result suggests the presence of a specific drug or its metabolites, even though the individual has not consumed that substance. False positives can happen due to several factors, such as cross-reactivity with other substances, incorrect testing procedures, or misinterpretation of results.

False positives can have significant consequences, such as unnecessary medical treatment, unwarranted disciplinary action in the workplace, or legal implications. To minimize the risk of false positives, it is essential to use reliable testing methods, follow proper testing procedures, and confirm positive results with more specific and accurate tests when necessary.

Examples of substances that may cause false positive drug test results:

• Ibuprofen (may cause false positives for marijuana)
• Dextromethorphan (may cause false positives for opioids or PCP)
• Sertraline (may cause false positives for benzodiazepines)
• Poppy seeds (may cause false positives for opioids)
• Efavirenz (may cause false positives for marijuana)