Final answer:
Taking antibiotics can alter the complete blood count (CBC) lab result by potentially increasing white blood cell count, which may indicate an infection.
Step-by-step explanation:
If a patient has taken an antibiotic, it can alter the complete blood count (CBC) lab result. A CBC looks at levels of different types of blood cells, such as white blood cells. An increased white blood cell count might indicate an infection, which could be a result of taking antibiotics.