Question

Freeze-dried tissue packaged in evacuated containers has a storage life not longer than how many years (unless a longer expiration date has been validated)?

a. 1
b. 2
c. 5
d. 10

Answer 1

Freeze-dried tissue in evacuated containers typically has a storage life of 5 years, maintained by storing at ultra-low temperatures to ensure long-term stability and prevent freeze-thaw damage.

Step-by-step explanation:

The storage life of freeze-dried tissue packaged in evacuated containers, unless a longer expiration date has been specifically validated, is 5 years. This limitation is due to concerns about long-term storage stability and the integrity of the tissue over time. These containers are often stored at ultra-low temperatures of -70 °C or lower to preserve the contents effectively.

Ultra-low temperatures are essential for maintaining the post-preparative stability of the tissues and to prevent degradation that can occur during freeze-thaw cycles. It’s important to note that the approach to preserving biological materials can vary based on the type of tissue or specimen and the intended use.