Apparatus for producing blood component products

An assembly for providing a blood component product having a determined yield pursuant to at least two on-line yield determination techniques, comprising:

• means for harvesting a plurality of a desired blood component from a source of blood;
• means for predicting a first predicted yield value for said harvested blood components, said means for predicting comprising a first of said at least two on-line yield determination techniques;
• means for monitoring said harvested blood components to obtain a first monitored yield value, said means for monitoring comprising a second of said at least two on-line yield determination techniques;
• means for applying a first calibration factor, associated with said means for predicting in relation to a predetermined off-line yield determination technique, to said first predicted yield value to obtain a second predicted yield value;
• means for applying a second calibration factor, associated with said means for monitoring in relation to said predetermined off-line yield determination technique, to said first monitored yield value to obtain a second monitored yield value;
• means for deriving said determined yield from said second predicted yield value and said second monitored yield value;
• and
• means for packaging said harvested blood components, whereby said determined yield value is identified with said packaged blood components to provide said blood component product.