A
LYX
C
OMPONENT
C
OLLECTION
S
YSTEM
O
PERATOR
’
S
M
ANUAL
C
HAPTER
4B
–
A
LYX
RBC/P
LASMA
C
OLLECTION
P
ROCEDURE
07-19-01-518 – January 2009
4B-53
Note:
The product recovery displayed on this screen is based on
the total volumes of the products, not on absolute red cell
recovery.
** The Post-Leukoreduction Product Recovery percentage may
or may not be displayed according to the Software Version or
settings of your A
LYX
instrument. Refer to the Calculating
Percent Product Recovery page located in the Appendix for
further instructions if the Product Recovery value is not
displayed.
If the displayed or calculated value is below 85% recovery, the
cause of the failure must be investigated in accordance with
center SOPs. The following list of causes may be investigated for
a collection that is below 85% recovery. Refer to Chapter 1 -
Introduction, "Performance and Blood Component Quality" for
a complete listing of situations which could affect the quality of a
product.
Inappropriate burping techniques – results in the loss of red cells.
Multiple alarms during filtration – entire red cell product not
filtered.
Improper weighing techniques – not waiting for weights to settle
or bumping the scale when weights are being finalized.
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