Anticoagulants: practice question

A Pharmacology question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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Pharmacology · Anticoagulants

Sample item

What laboratory test is used to monitor warfarin therapy?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

C. INR

Warfarin effect is monitored using the international normalized ratio, which standardizes prothrombin-time testing across laboratories.

Option by option

  • A. Troponin

    Troponin measures myocardial injury.

  • B. Serum sodium

    Serum sodium measures electrolyte balance.

  • C. INR (correct)

    Correct: INR monitors vitamin K antagonist anticoagulation.

  • D. Bleeding time

    Bleeding time is not used for routine warfarin monitoring.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

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Questions about this Pharmacology question

What is the answer to this Pharmacology question?

The best answer is C, INR. Warfarin effect is monitored using the international normalized ratio, which standardizes prothrombin-time testing across laboratories.

Why is "Troponin" not the answer?

Troponin measures myocardial injury.

Why is "Serum sodium" not the answer?

Serum sodium measures electrolyte balance.

Why is "Bleeding time" not the answer?

Bleeding time is not used for routine warfarin monitoring.

What concept does this question test?

It tests Anticoagulants in Pharmacology. The correct option holds because: Correct: INR monitors vitamin K antagonist anticoagulation.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Anticoagulants?

Learn drugs as classes, then the exception in each class that an examiner would pick. Then use the flashcards and the other Pharmacology questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.