Difficulty: Medium
Average Score: 94%
Simulated
A nurse is reporting a client's laboratory tests to the provider to obtain a prescription for the client's daily warfarin. Which of the following laboratory tests should the nurse plan to report to obtain the prescription for the warfarin?
Correct answer
A
Rationale
The correct answer is A: INR. The International Normalized Ratio (INR) is used to monitor and adjust warfarin therapy. It measures the effectiveness of warfarin in thinning the blood and helps determine the appropriate dosage. A higher INR indicates the blood is too thin, while a lower INR indicates the blood is too thick. Fibrinogen level (B) is not directly related to warfarin therapy. aPTT (C) is used to monitor heparin therapy, not warfarin. Platelet count (D) is important for assessing clotting function but is not specifically needed to adjust warfarin dosage.