25/08/2026
# Anemia vs Polycythemia vs Leukemia 🩸🧬
Not all abnormal blood counts mean the same thing.
🔴 **ANEMIA** — Too little hemoglobin or too few/abnormal red blood cells → fatigue, weakness, pallor and shortness of breath.
**Common causes:** blood loss, iron/B12/folate deficiency, chronic disease and hemolysis.
🔴 **POLYCYTHEMIA** — Increased red blood cell mass, causing elevated hemoglobin/hematocrit.
**Causes:** dehydration, chronic hypoxia, smoking, or **Polycythemia Vera (PV)**, a bone-marrow disorder.
⚪ **LEUKEMIA** — Cancer of blood-forming tissues, leading to abnormal production of white blood cells and disruption of normal blood-cell production.
**Possible signs:** persistent fatigue, recurrent infections, unexplained bruising/bleeding, fever or weight loss.
đź§Ş **Laboratory tests matter:** CBC, peripheral blood film, reticulocyte count and other targeted tests help determine the cause.
📌 **Remember:** An abnormal CBC is a finding—not a diagnosis. Proper clinical evaluation and laboratory investigation are essential.
Follow **Lab Medicine Today** đź§Ş for simple, evidence-based hematology education.