How long after plasma donation must you wait before flying?

How long after plasma donation must you wait before flying?

• A. 24 hours
• B. 12 hours
• C. 72 hours
• D. 48 hours

Answer: (A)

After plasma donation, your circulating plasma volume is reduced. In flight, the combination of lower cabin pressure and the body’s tendency to recruit fluids can make this volume deficit more noticeable, increasing the risk of lightheadedness or fainting as you ascend or descend. The body restores plasma volume fairly quickly, but it generally takes about a day to return toward baseline, so waiting roughly 24 hours before flying gives enough time for the circulating volume to reestablish and reduces these risks. Shorter waits don’t allow full recovery, while longer waits don’t provide additional safety benefit for most travelers.

After plasma donation, your circulating plasma volume is reduced. In flight, the combination of lower cabin pressure and the body’s tendency to recruit fluids can make this volume deficit more noticeable, increasing the risk of lightheadedness or fainting as you ascend or descend. The body restores plasma volume fairly quickly, but it generally takes about a day to return toward baseline, so waiting roughly 24 hours before flying gives enough time for the circulating volume to reestablish and reduces these risks. Shorter waits don’t allow full recovery, while longer waits don’t provide additional safety benefit for most travelers.