Testing Requirements

This page covers the following topics:

  • Overview
  • General Testing Requirements
  • Types of Tests
  • Substances that Are Tested
  • Positive Tests
  • Test Refusal
  • Requirements for Handling Test Results


Generally, employers must ensure that alcohol or controlled substance testing complies with federal law. Federal regulations specify:

  • Who can be tested
  • When tests can be administered
  • What types of tests can be conducted
  • What substances are tested
  • What happens if a test is positive
  • What happens in the event of a test refusal

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