MCV, RDW: Understanding CBC and Anemia

Low/high MCV: clues (iron, B12, folate). RDW: complementary marker, useful but non-specific.

MCV, RDW: Understanding CBC and Anemia

3 min - BioSense Team - 2025-01-09

  • MCV
  • RDW
  • CBC
  • anemia
  • blood count

CBC (MCV and RDW): Useful for Guidance, Not for Diagnosis Alone

Disclaimer: Always cross-reference with hemoglobin, ferritin, context.

In 30 Seconds

  • MCV helps classify anemia (microcytic, normocytic, macrocytic).
  • RDW reflects red blood cell size variability: it's a complementary marker, associated in literature with cardiovascular outcomes, but non-specific.

Common Case

  • Low MCV → often iron deficiency (confirm with ferritin and iron panel).

Sources

  • RDW and cardiovascular outcomes (reviews)

Related Articles

See also: Ferritin, CRP, Vitamin D.