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Old Wed May 4, 2011, 04:00 PM
Neil Cuadra Neil Cuadra is offline
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Join Date: Jul 2006
Location: Los Angeles, California
Posts: 2,553
Leanne,

Aplastic anemia is classified by blood counts and bone marrow cellularity. The distinction between MAA and SAA is based on cutoff values, not symptoms, so they aren't distinct diseases, just measurements along a scale from less serious to more serious.

They call it severe aplastic anemia when you have bone marrow cellularity of less than 25% and at least two of the following three count ranges:
  1. absolute neutrophil count < 500/µL
  2. absolute reticulocyte count < 20,000/µL
  3. platelet count <20,000/µL
Do you know the numbers for your son?
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