Complete Blood Count
Tests
The Complete Blood Count (CBC) is one of the most frequently performed laboratory tests. It shows the quantity and characteristics of the main blood cells – erythrocytes, leukocytes, and platelets, as well as hemoglobin and hematocrit levels.
What can be assessed with CBC?
Changes in erythrocytes, hemoglobin, and related indices can be important in assessing anemia and its possible causes. The quantity and formula of leukocytes may change during infections, inflammation, certain medications, or blood diseases. Platelets participate in coagulation, so their number changes are assessed alongside other blood indicators and the person's health status.
CBC is an informative initial test, but it does not provide a single specific diagnosis. For example, decreased hemoglobin indicates anemia, but determining its cause may require ferritin, iron metabolism, vitamin B12, folic acid, or other tests.
The laboratory's indicated norms, age, gender, pregnancy, medications used, and previous results are important in assessing the result. If CBC changes are significant or recurring, their cause should be evaluated by a doctor.