Does taking anti-inflammatory medication affect a complete blood count (CBC) test?

Taking anti-inflammatory medications may affect blood routine tests, potentially causing a decrease or increase in white blood cell count. It is advisable to avoid taking anti-inflammatory drugs before undergoing a blood routine test.

Anti-inflammatory drugs typically include antibacterial agents, antibiotics, and anti-anaerobic medications, all of which can directly influence the results of blood routine tests. These medications often contain antibiotic components that may affect white blood cells, lymphocytes, monocytes, and neutrophils in the body after administration. They may also lead to abnormal white blood cell levels. Conducting a blood routine test after taking anti-inflammatory drugs could interfere with a doctor's accurate assessment of the disease.

When inflammation occurs in the body, white blood cell count usually rises. Taking anti-inflammatory drugs may reduce white blood cell levels, potentially leading to inaccurate blood test results. Therefore, it is best to avoid medication prior to a blood routine test. The condition should be evaluated based on the blood test results, and medication should be taken only under a doctor's guidance.