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Mariam Swidan: MCV-Based Anemia Classification
Mariam Swidan/LinkedIn
May 5, 2026, 11:00

Mariam Swidan: MCV-Based Anemia Classification

Mariam Swidan, Biomedical Science Graduate, Clinical Laboratory Professional, shared a post on LinkedIn:

“Clinical Lab Concepts 5

Anemia Classification (MCV-based)

Anemia is a group of diseases characterized by decreased hemoglobin and hematocrit levels.

It is commonly detected and monitored through a complete blood count (CBC).

One of the most important parameters in a CBCD is the Mean Corpuscular Volume (MCV), which measures the average size of your red blood cells.

It plays a key role in classifying different anemias,

Normal range: 80–100 femtoliters (fL)

MCV-Based Classification:

  • Low MCV (<80 fL): Indicates microcytic anemia (small RBCs)
    Common anemias: Iron Deficiency Anemia, lead poisoning,  thalassemia
  • Normal MCV: Indicates normocytic anemia (normal RBCs)
    Common anemias: anemia of chronic disease, acute blood loss, hemolytic anemia, bone marrow disorder
  • High MCV (>100 fL): Indicates macrocytic anemia (big RBCs)
    Common anemias: B12 deficiency, folate deficiency, liver disease, hypothyroidism

Why is the MCV important:

  • Part of routine health checkups(via CBC)
  • Helps narrow the cause of low anemia
  • Monitor treatment  response

MCV alone can’t diagnose a specific disease.

It must be determined alongside other indices such as MCH, MCHC, and RDW, as well as the patient’s clinical representation.”

Mariam Swidan

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