Approach to bleeding disorders (coagulopathy) Quiz: Ace Your Exams
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A 36-year-old man presents to the hematology clinic after having experienced prolonged bleeding after a recent tooth extraction. He does not have a personal or family history of bleeding disorders. He has no significant past medical history. Current medications include acetaminophen as needed for back pain. The physical examination is unremarkable except for scattered ecchymoses on the upper and lower extremities bilaterally. Laboratory studies are shown below. Which of the following tests should be performed next as part of the evaluation for prolonged bleeding?
| Laboratory value | Result |
| Serum chemistries | |
| Hemoglobin | 12.4 g/dL |
| Leukocyte count | 12,100 /mm3 |
| Platelet count | 240,000/mm3 |
| Prothrombin time (PT) | 12 seconds |
| Activated partial thromboplastin time (aPTT) | 60 seconds |
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