When the Chromogenic Assay for Antithrombin Is Performed,which of the Following

question 12

Multiple Choice

When the chromogenic assay for antithrombin is performed,which of the following is true?

• A)The colored end-product intensity is inversely proportional to the antithrombin concentration.
• B)The chromogenic substrate is bound by antithrombin.
• C)Warfarin is added to the patient sample before testing to improve sensitivity.
• D)Activated protein C competes for the chromogenic substrate, so it must first be selectively removed.

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