Why Is It Important to Standardize the Results of a Prothrombin

question 5

Multiple Choice

Why is it important to standardize the results of a prothrombin time (PT) test?

• A) To account for the wide variation in commercial preparations of thromboplastin and the differences in instrumentation
• B) To introduce a proportionality constant that ensures the results will fit onto the standard curve
• C) To eliminate interference by anticoagulant drugs
• D) None of the above

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