Interpreting Test Results

Your First Check® Home Drug Test will provide you with results in 5 minutes. You should not wait longer than 10 minutes to read the results.

  • A red or pink line must appear next to the word “Control” to indicate the test has worked correctly.

Negative Results image
No Drugs Detected

A red or pink colored line next to the word “Control” AND a red or pink colored line next to the word “Drug” indicates a Negative Result for that drug, regardless of how dark or faint the lines may appear. No future testing is required.

Positive Results image
Drug Detected

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.

Invalid Results
Invalid Result

If after 10 minutes NO line appears next to the word "Control," the result in Invalid.

Before taking the test, users must read all of the content in the package insert.

To Learn More

Watch the Interpreting Test Results Video

Free Laboratory Confirmation

The First Check Home Drug Test is considered a screening test. We recommend all preliminary positive results be sent to the laboratory for free confidential confirmatory testing.

Our state-of-the-art lab is one of the nation′s premier forensic drug testing facilities and uses Gas chromatography/mass spectrometry (GC/MS), the gold standard for lab testing most drugs. We offer the most accurate result possible, while maintaining strict confidentiality.

How to Send Your Sample

First Check customers can send their sample to the lab using the pre-addressed mailing box included in the First Check Home Drug Test kit.

Expert Lab Testing

Your First Check® Home Drug Test sample can be sent to our state-of-the-art test laboratory for free confirmatory testing.

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