Fresh frozen plasma stored at -65°C will have a shelf life of which option?

Fresh frozen plasma stored at -65°C will have a shelf life of which option?

• A. 1 year
• B. 24 hours
• C. 7 years
• D. 10 years

Answer: (C)

The main idea is how storage temperature affects how long plasma remains usable. Freezing preserves coagulation factors by slowing or stopping the biochemical processes that cause degradation. At typical frozen storage (-18°C), plasma is kept for about one year. When plasma is stored at much colder temperatures, like -65°C, it becomes deep-frozen, and stability is greatly extended. This ultra-low temperature minimizes factor loss over time, allowing a shelf life of about seven years. So, the best choice reflects that long-term deep-frozen storage preserves fresh frozen plasma for roughly seven years. (After thawing, plasma has a short post-thaw usage window, but as frozen, the shelf life is seven years.)

The main idea is how storage temperature affects how long plasma remains usable. Freezing preserves coagulation factors by slowing or stopping the biochemical processes that cause degradation. At typical frozen storage (-18°C), plasma is kept for about one year. When plasma is stored at much colder temperatures, like -65°C, it becomes deep-frozen, and stability is greatly extended. This ultra-low temperature minimizes factor loss over time, allowing a shelf life of about seven years.

So, the best choice reflects that long-term deep-frozen storage preserves fresh frozen plasma for roughly seven years. (After thawing, plasma has a short post-thaw usage window, but as frozen, the shelf life is seven years.)