What is the expiration date of red blood cells preserved with CPDA-1?

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Multiple Choice

What is the expiration date of red blood cells preserved with CPDA-1?

Explanation:
Red blood cells preserved with CPDA-1 have a shelf life of 35 days when stored at 1–6°C. The CPDA-1 solution provides citrate as an anticoagulant, phosphate as a buffer, dextrose as an energy source, and adenine to support ATP production in red cells. Adenine helps maintain cellular energy and metabolism during storage, which extends viability compared with older formulations that lacked adenine. Although some newer additive solutions can push shelf life to about 42 days, CPDA-1 alone is specifically associated with a 35-day expiration.

Red blood cells preserved with CPDA-1 have a shelf life of 35 days when stored at 1–6°C. The CPDA-1 solution provides citrate as an anticoagulant, phosphate as a buffer, dextrose as an energy source, and adenine to support ATP production in red cells. Adenine helps maintain cellular energy and metabolism during storage, which extends viability compared with older formulations that lacked adenine. Although some newer additive solutions can push shelf life to about 42 days, CPDA-1 alone is specifically associated with a 35-day expiration.

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