Final answer:
Certain medications can affect the results of a blood smear, such as aspirin and certain antibiotics.
Step-by-step explanation:
Before collecting a blood smear, it is important to check if the patient takes any medications, as certain medications can affect the results of a blood smear. One medication that can affect the results of a blood smear is aspirin. Aspirin can interfere with the clotting process and lead to abnormal bleeding patterns, which can affect the appearance of the blood cells on the smear. Additionally, certain antibiotics can cause changes in the appearance of the white blood cells, leading to inaccurate results.