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How to do a flu swab?

Published in Flu Swab Procedure 2 mins read

Here's a guide on how to properly perform a flu (influenza) swab:

Performing a flu swab involves carefully collecting a sample from the nasal passages to test for the presence of the influenza virus. It's crucial to follow the correct procedure to ensure accurate results.

Step-by-Step Instructions for Performing a Flu Swab

Here's a detailed breakdown of the process:

  1. Preparation: Gather all necessary materials, including:

    • A sterile flu swab (usually a nasopharyngeal swab).
    • A vial containing viral transport medium (VTM) or universal transport medium (UTM) – typically 2-3 mL.

  2. Insertion: Carefully insert the swab into the nostril and gently guide it back into the nasopharynx (the upper part of the throat behind the nose).

    • The nasopharynx is the target area for collecting the sample.
    • Reference (2): Insert the swab into the nostril and back into the nasopharynx and leave in place for 30-60 seconds.

  3. Sampling: Once the swab is in the nasopharynx, leave it in place for 30-60 seconds to collect sufficient sample material.

  4. Withdrawal: Slowly withdraw the swab with a rotating motion. This ensures you collect cells from the entire surface area.

    • Reference (3): Slowly withdraw the swab with a rotating motion.

  5. Specimen Transfer: Immediately place the tip of the swab into the vial containing 2-3mL of VTM or UTM.

    • Reference (4): Place the tip of the swab into the vial containing 2-3mL of VTM or UTM.
    • If using an aluminum shaft swab, cut the shaft to allow the vial to be closed properly.

  6. Storage and Transport: Follow the lab's instructions for proper storage and transport of the specimen to maintain its integrity.

Important Considerations:

  • Patient Comfort: Communicate clearly with the patient throughout the procedure to minimize discomfort.
  • Sterility: Maintain sterility throughout the process to avoid contamination of the sample.
  • Proper Swab Type: Ensure you are using the correct type of swab for flu testing (usually a nasopharyngeal swab).
  • Safety: Wear appropriate personal protective equipment (PPE), such as gloves and a mask, to protect yourself from potential exposure.
  • Technique: If possible, receive training on proper swabbing technique from a healthcare professional.

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