Common Misconceptions About Blood Collection Tubes – Do You Know the Truth?

1. The liquid inside the blood collection tube is “medication” and harmful to the body?

    Error. The liquid inside the blood collection tube is an additive (anticoagulant, coagulant, etc.) in extremely small doses and is solely used for processing blood samples. 

    It does not enter the human body (blood collection is blood outflow, not injection) and is completely safe.

2. The more blood drawn, the more accurate the test results? 

    Error. The blood volume in each blood collection tube is designed based on testing requirements. Excessive blood collection does not improve  accuracy and may instead

    increase patient discomfort (especially in children and the elderly).

3. Can expired blood collection tubes still be used as long as they are not damaged? 

    Error. Blood collection tubes have a clear shelf life. After expiration, additives may become ineffective, or the sterile environment inside the tube may be compromised,

   directly affecting test results. Reputable hospitals strictly discard expired blood collection tubes.