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The following are the inventory level percentages based on the desired seven-day supply:

2.5% of O+

0.4% of O-

3.8% of A+

3.7% of A-

1.9% of B+

8.1% of B-

15.2% of AB+

8.1% of AB-

  •  A critically low level is a red
    blood cell inventory less than
    a one-day supply.
  • A one day inventory is the
    lowest level of red blood cell inventory in the Region's
    desirable range.
  • After September 11, 2001, optimal inventory levels for the Region changed from a three day inventory to a seven-day inventory of red blood cells.

 

 

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