Platelets must be prepared within how many hours after collection of whole blood?

Platelets must be prepared within how many hours after collection of whole blood?

• A. 4 hours
• B. 6 hours
• C. 8 hours
• D. 12 hours

Answer: (B)

Platelets are particularly time-sensitive after whole-blood collection; processing into platelet concentrates must happen within a limited window to preserve platelet function and minimize contamination risk. Six hours is the commonly used processing cutoff. Processing within this period helps ensure the platelets remain viable and safe for transfusion. Delaying beyond six hours can degrade platelet quality and increase the risk of bacterial growth, which is why longer processing windows are not preferred.

Platelets are particularly time-sensitive after whole-blood collection; processing into platelet concentrates must happen within a limited window to preserve platelet function and minimize contamination risk. Six hours is the commonly used processing cutoff. Processing within this period helps ensure the platelets remain viable and safe for transfusion. Delaying beyond six hours can degrade platelet quality and increase the risk of bacterial growth, which is why longer processing windows are not preferred.