Patients taking the drug heparin will have a higher-than-normal value for ________ on their blood test
A) thrombocytes
B) partial thromboplastin time
C) hemoglobin
D) mean cell volume
B
Explanation: A) The number of thrombocytes is not affected by the drug heparin.
B) Correct! Partial thromboplastin measures the time it takes for a sample of blood to clot. Heparin is an anticoagulant so the clotting time is lengthened.
C) The hemoglobin is not affected by the drug heparin.
D) The mean cell volume is not affected by the drug heparin.
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