Breath Testing – A Simplified Guide

By following this structured procedure, the breath testing process remains accurate, professional, and compliant

Preparation for Testing

  Set up a private testing environment, ensuring you have:

  • Required equipment & consumables
  • Paperwork & documentation
  • Personal Protective Equipment (PPE)
  • Check device calibration before proceeding.

Conducting the Test

1️ Introduction

  • Introduce yourself to the donor.
  • Ask if they are familiar with the company’s Drug & Alcohol Policy.
  • Obtain their consent for the test.

2️ Pre-Test Screening

  • Ask if the donor has consumed any food or drinks in the last 20 minutes.
  • Check if they have smoked or vaped in the last 5 minutes.
  • Confirm identity using an ID card or supervisor verification (including birthdate as a second identifier).

3️ Consent & Device Preparation

  • Read the consent statement and obtain a signed consent form.
  • Ensure the donor understands (consider language barriers, literacy, or vision issues).
  • Turn on the breathalyzer device and confirm the serial number of the device and the calibration date with the donor.
  • Record the serial number and calibration date of the device.

4️ Conducting the Test

  • Provide a new, hygienic mouthpiece to the donor.
  • Instruct them to blow continuously until told to stop.
  • If the device indicates “Blow Failure,” reset and ask the donor to try again.
  • Show the test result on the screen to the donor.

Interpreting Results

  If the result is 0.000%:

  • Record the result as the First Sample on the Chain of Custody Form.
  • The donor may return to work.

  If the result is above 0.000%:

  • Record the result and inform the donor.
  • They must wait 20 minutes before a retest, under supervision.
  • No food, drink, or smoking allowed during this period.

  After 20 minutes – Retest:

  • Use a fresh mouthpiece.
  • Record the Second Sample result.
  • If 0.000%, the donor may return to work.
  • If still above 0.000%, report to NCR for further action as per company procedure.

Important Testing Guidelines

⚠ Do NOT store or use the breathalyzer near ethanol-based products (wipes, gels, sprays).

⚠ Do NOT clean the breathalyzer with disinfectant wipes.

⚠ The collector must always maintain control of the device – do not hand it to the donor.

⚠ Do NOT allow liquids near the mouthpiece.

⚠ Ensure the exhaust port is not blocked during the test.

⚠ Always instruct the donor to take a deep breath before testing.

Testing Consent Form

Obtaining donor consent is mandatory before conducting a breath alcohol test. The consent document should:

  • Clearly state the purpose of the test.
  • Include donor’s name, date, and signature.
  • Confirm donor’s awareness of the company policy. ✔ Document the test results properly.

  Always follow hygienic protocols when handling mouthpieces.

Updated on March 21, 2025

Was this article helpful?

Related Articles