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Reticulocyte index

缺血時 R 佔比天然地變高, ∴ 因此要給他打折才 ✖ 不會誤以為骨髓生產力好

RI =

[reticulocyte count × (Pt’s Hct/nl Hct)]/maturation factor]

maturation factors for a given (天)

  • Hct: 45% = 1,
  • 35% = 1.5,
  • 25% = 2,
  • 20% = 2.5

RI >2% → adequate marrow response; RI <2% → hypoproliferation