Diagnostic & Screening Tests

Complete Blood Count (CBC)

A complete blood count, or CBC, is a blood test used to evaluate overall health and detect a wide range of disorders, including anemia and infection. The test measures several components and features of the blood, including:

  • Red blood cells, which carry oxygen
  • White blood cells, which fight infection
  • Hemoglobin, the oxygen-carrying protein in red blood cells
  • Hematocrit, the proportion of red blood cells to the fluid component, or plasma, in your blood
  • Platelets, which help with blood clotting

Abnormal increases or decreases in cell counts can indicate an underlying medical condition that calls for further evaluation.

In terms of colon disease, the CBC may reveal a low red blood cell count, called anemia, which could indicate bleeding in the colon or rectum. A high white blood cell count may indicate inflammation or infection somewhere in the body.