Drop of blood from a fingertip on the diagnostic strip of a CoaguChek monitor used to test for blood clotting in an International Normalized Ratio (IN

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Drop of blood from a fingertip on the diagnostic strip of a CoaguChek monitor used to test for blood clotting in an International Normalized Ratio (INR) test. The anti-coagulant drug warfarin was being monitored in this patient by the level of prothrombin in the blood.

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Photo credit: © DR P. MARAZZI/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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