What are the consequences of using an expired collection tube?

• A. Inaccurate test results or specimen contamination
• B. Higher risk of patient infection
• C. Reduced blood volume collected
• D. Increased processing time

Answer: (A)

Using an expired collection tube can lead to inaccurate test results or specimen contamination, which is the primary concern in phlebotomy practice. Collection tubes have specific expiration dates because the additives within them can degrade over time. For example, anticoagulants may lose their effectiveness, leading to improper blood sample preservation and altered test results. Additionally, if the integrity of the tube is compromised, there may be a risk of contamination from the surrounding environment or from the breakdown of materials within the tube.

Inaccurate test results can directly affect diagnosis and treatment plans for patients, highlighting the importance of using equipment that is within its expiration date. Maintaining quality and reliability in laboratory testing is crucial, and using expired tubes undermines this goal, potentially leading to clinical consequences that affect patient care.