Blood/Blood Cells and Cellular Components ›› Red Blood Cells ›› Abnormal


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Microscopic Features:
  • Usually smaller than a normal RBC
  • MCV may be normal or slightly decreased
  • Very Round
  • No central pallor
Normal % blood-PB, marrow-BM, lymphoid tissue-LN:
  • PB: Rare to None
  • BM: Rare to None
  • LN: Rare to None
May Resemble: Differential Diagnoses:

Increased in:
Hereditary spherocytosis
Autoimmune hemolytic anemia
Burn patients

Classic Immunophenotype:
  • N/A
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  • Similar to Hereditary Stomatocytosis and Hereditary Elliptocytosis, Hereditary Spherocytosis (HS) is also due to an underlying RBC membrane defect (The membrane defect in HS is in many instances due to spectrin, ankyrin, band 3 protein, or protein 4.1). The MCHC value is usually increased in patients with HS

Content Editors/Website Administrators:
Hooman H. Rashidi, MD; John C. Nguyen, MD