Which laboratory value is routinely monitored to ensure that a patient receiving warfarin (a vitamin K antagonist) remains within a safe therapeutic range and to guide dosage adjustments?
Blood urea nitrogen (BUN)
Low-density lipoprotein (LDL) cholesterol level
International Normalized Ratio (INR)
Hemoglobin A1c (HbA1c)
The International Normalized Ratio (INR) is a standardized calculation derived from the prothrombin time that measures the extent of anticoagulation produced by vitamin K antagonists such as warfarin. Clinicians adjust the dose of warfarin to keep the INR in a target therapeutic range (for many indications 2.0-3.0). Monitoring the INR helps prevent thrombotic events when values are too low and bleeding complications when values are too high. Hemoglobin A1c is used for long-term glycemic control, blood urea nitrogen assesses renal function, and LDL cholesterol evaluates lipid status; none of these are used to guide warfarin dosing.
Bash is our AI bot, trained to help you pass your exam. AI Generated Content may display inaccurate information, always double-check anything important.
All Nursing and Medical Assistants Package plans include the following perks and exams .
Our pricing is simple. Full access to all certifications and exams in each package, for one price.
As many practice tests for as many topics as you want.
Use study mode non-stop, no limits.
Access to our AI assistant, Bash, trained to help you pass your exam.
Track your scores over time in study mode and report cards.
See how you improve over time, and where you need to focus.
All Nursing and Medical Assistants Package plans include unlimited access to the following study materials.
Create an account or sign in to access our study materials.