Question

The life span of blood in citrate saline after withdrawal from the donor stored at 4-6°C is _______ days.

• A. \( 7 \text{ days} \)
• B. \( 15 \text{ days} \)
• C. \( 21 \text{ days} \)
• D. \( 30 \text{ days} \)

Hint:

Remember that different anticoagulant solutions affect the storage life of blood. CPDA-1 allows for longer storage than simpler citrate-based solutions.

Answer 1

The Correct Option is A

The shelf life of whole blood collected in citrate-phosphate-dextrose-adenine (CPDA-1) anticoagulant solution and stored at 4-6°C is typically up to 35 days in many regions. However, the question specifically mentions "citrate saline," which usually refers to a simpler anticoagulant solution like Acid Citrate Dextrose (ACD) or Citrate Phosphate Dextrose (CPD). Blood stored in ACD or CPD generally has a shorter shelf life compared to CPDA-1. While specific guidelines can vary by region and blood bank practices, a lifespan of around 7 days for blood in citrate saline (without adenine) stored at 4-6°C is a reasonable approximation based on older or less common storage protocols. Modern blood banking predominantly uses CPDA-1 for longer storage. Given the options, 7 days is the shortest and most plausible lifespan for blood stored in a basic citrate saline solution.