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It's safe to donate plasma twice a week, which adds up to about eight or nine times per month. The FDA states that there must be at least 48 hours between plasma donations.
You can donate as often as twice per week with at least two days in between donations at most private donation centers. This is possible because blood plasma regenerates every 24-48 hours.
Plasma can be stored for up to a year, while blood cells can be preserved for up to 42 days. You can donate plasma more frequently than you can donate blood, sometimes up to two times a week. You ...
For example, plasmapheresis donors in the United States are allowed to donate large volumes twice a week and could nominally donate 83 litres (about 22 gallons) in a year, whereas the same donor in Japan may only donate every other week and could only donate about 16 litres (about 4 gallons) in a year. [85]
The body typically replaces the collected volume within 24 hours, and donors typically donate up to twice a week, though this varies by country. [citation needed] The collected plasma is promptly frozen at lower than -20 °C (-4 °F) and is typically shipped to a processing facility for fractionation.
In most cases, blood plasma is returned to the donor as well. However, in locations that have plasma processing facilities, a part of the donor's plasma can also be collected in a separate blood bag (see plasmapheresis). For example, in Australia around 5.9×10 11 platelets and 580 mL of plasma might be collected from an 88 kg donor.
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