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Warfarin Monitoring — MRCGP AKT MCQ

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HardHaematologyWarfarin MonitoringMRCGP AKTUKMLAPARA

A patient using a home INR meter obtains a result that is inconsistent with repeated recent values and has no bleeding. What is the best next step?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: D — Repeat INR through accredited testing

The best answer is “Repeat INR through accredited testing”. An unexpected point-of-care INR should be repeated and, when clinically discordant or outside the device’s reliable range, confirmed through an accredited laboratory or anticoagulation service before major dose changes. Bleeding symptoms still require urgent assessment. Device technique, strips and quality control should also be reviewed.

Reference: Warfarin 0.5 mg tablets Summary of Product Characteristics: https://www.medicines.org.uk/emc/product/15258/smpc