Platelet aggregation test

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• excessive bleeding
• fainting or feeling light-headed
• hematoma (blood accumulating under the skin)
• infection (a slight risk any time the skin is broken)
• multiple punctures to locate veins

Medications that may alter test results include:

• aspirin
• aspirin compounds
• nonsteroidal anti-inflammatory drugs
• tricyclic antidepressants
• antihistamines
• some antibiotics

Review Date: 04/15/2005
Reviewed By: Rita Nanda, MD, Department of Medicine, Section of Hematology/Oncology, University of Chicago Medical Center, Chicago, IL. Review provided by VeriMed Healthcare Network.