PLT concentrates produced from whole blood by the BC method after an overnight hold have laboratory variables suggestive of a higher quality than those concentrates produced by the PRP method.

Newer PASs, for example, SSP+ and Composol, can maintain PLT integrity and moderate metabolism similarly to plasma but offer consistently lower PLT recoveries and limited osmotic balance.

Plasma and cryoprecipitate products, prepared using methods in which the plasma is frozen close to 24 hours after collection, meet current quality standards. The longer WB storage time has been implemented into general use in Canada.