How often should INR be checked once stable on Warfarin?

Once a patient is stable on Warfarin, the frequency of INR (International Normalized Ratio) monitoring can be extended due to the drug's established therapeutic range and the patient's consistent response to the medication. Monitoring INR levels every 4-12 weeks is generally appropriate for stable patients, as this interval allows healthcare providers to ensure that coagulation levels remain within the desired therapeutic range while minimizing the need for frequent blood draws, which can be inconvenient and burdensome.

Regular INR checks are crucial for Warfarin management because this medication affects blood coagulation, and maintaining the correct INR is essential to prevent clotting issues or bleeding risks. However, once a stable therapeutic level is achieved and confirmed, the monitoring can be less frequent. This allows for a balance between patient care and quality of life, avoiding unnecessary visits and tests while still ensuring patient safety.

The other options indicate more frequent monitoring than necessary for patients who have stabilized, which could lead to increased healthcare costs and patient discomfort without providing significant benefits.