What issues can arise from using a partially evacuated tube or malfunctioning vacuum, and how should you respond?

What issues can arise from using a partially evacuated tube or malfunctioning vacuum, and how should you respond?

• A. Incomplete draw and potential sample contamination
• B. Faster processing
• C. No issues
• D. Labeling errors

Answer: (A)

When the vacuum in an evacuated tube is partially lost, the draw may stop before the tube is full. That leaves an underfilled tube, which throws off the blood-to-additive ratio in many additives’ tubes and can compromise the sample’s integrity. The result is potentially inaccurate test results and increased risk of contamination from improper mixing or exposure. If you notice a partial vacuum or an incomplete draw, stop drawing with that tube, discard the tube and the specimen, and start over with a new, correctly labeled evacuated tube of the proper type. Ensure you fill to the appropriate level, mix according to guidelines if additives are present, and document the issue so the lab understands the specimen was compromised. Faster processing or no issues aren’t accurate descriptions of what this situation causes, and labeling errors aren’t directly caused by the vacuum problem.

When the vacuum in an evacuated tube is partially lost, the draw may stop before the tube is full. That leaves an underfilled tube, which throws off the blood-to-additive ratio in many additives’ tubes and can compromise the sample’s integrity. The result is potentially inaccurate test results and increased risk of contamination from improper mixing or exposure.

If you notice a partial vacuum or an incomplete draw, stop drawing with that tube, discard the tube and the specimen, and start over with a new, correctly labeled evacuated tube of the proper type. Ensure you fill to the appropriate level, mix according to guidelines if additives are present, and document the issue so the lab understands the specimen was compromised. Faster processing or no issues aren’t accurate descriptions of what this situation causes, and labeling errors aren’t directly caused by the vacuum problem.