Units of fresh plasma from a single donor are kept frozen in quarantine until at least 2 months after donation. After this period, the donor donates again and thus undergoes a new analysis. If the second analysis produces another negative result, the plasma from the first donation is released for transfusion purposes. This method minimises the risk of using a unit of plasma that may have been obtained during an incubation period of any of the viruses under analysis.
Collapsible plastic bags.
By labels stating: name of centre, type of product, ABO group and Rh (D) factor, unit number, date of extraction, expiry date, results of completed analysis, type of anticoagulant, and instructions for storage and administration.
The units of plasma in quarantine may be fractionated into subunits.