What can cause inaccurate CBC test results?

Several factors can influence the accuracy of CBC test results. Dehydration can artificially elevate hemoglobin and hematocrit levels, while stress or anxiety may cause a temporary increase in white blood cells. Medications, such as corticosteroids or chemotherapy drugs, can also affect results. Improper sample handling, including clotting or delays in analysis, can lead to erroneous data. To ensure accurate readings, it’s important to follow all pre-test instructions, stay hydrated, and inform your doctor of any medications or health conditions that might affect your blood count.