How should a sample suspected of IV contamination be managed?

• A. Do not use; recollect from a clean site or a different arm after removing the IV if allowed
• B. Use the sample
• C. Dilute and continue
• D. Send to a different lab

Answer: (A)

When IV contamination is suspected, the sample should not be used. IV fluids, medications, or heparin from the infusion can mix with the blood in the sample and alter test results, making them unreliable. The best approach is to obtain a new specimen from a clean venipuncture site, or from the opposite arm, after removing the IV line if allowed by policy. This preserves the integrity of the patient’s true lab values and avoids false results.

Using the contaminated sample would risk incorrect results. Diluting and continuing wouldn’t fix the contamination and would still yield inaccurate data. Sending the sample to a different lab won’t correct the compromised specimen itself and could delay diagnosis. Recollection with proper technique ensures accurate testing.