Veterinary Technician Practice Exam

What is a correct statement about the proper storage of whole blood?

1. It can be stored at temperatures above 50 F for 1 week

2. It should be kept at room temperature for up to 2 weeks

3. It can be stored at 32.9 F to 50 F for up to 3 weeks

4. It must be frozen to preserve viability

The correct answer is: It can be stored at 32.9 F to 50 F for up to 3 weeks

Whole blood has specific storage requirements to ensure its viability and functionality for transfusion. The correct statement about the proper storage of whole blood is indeed that it can be stored at a temperature range of approximately 32.9°F to 50°F for up to 3 weeks. This temperature range allows for the preservation of red blood cells while minimizing the risk of bacterial growth and other degradation processes that can occur at higher temperatures. Maintaining the blood within this temperature range helps ensure that the components of the blood, such as red blood cells, plasma, and platelets, remain viable for eventual transfusion. Storing whole blood at temperatures above 50°F or at room temperature poses a significant risk to the quality and safety of the blood, as it can lead to hemolysis (the breakdown of red blood cells) and an increase in bacterial contamination. In contrast, freezing whole blood is not typically done because it can damage the red blood cells and alter the properties of the blood. Frozen blood products require specific processing and are generally used for specific components like plasma and cryoprecipitate rather than whole blood. Thus, understanding the correct storage temperature and duration is crucial for maintaining the safety and effectiveness of transfusions.