Platelet Aggregation Study

Additional Info: Platelet aggregation with 7 agonists (3 concentrations of ADP, collagen, 2 concentrations of Ristocetin, and arachidonic acid) and an interpretation.

Methodology: Aggregometry with 7 Agonists

Specimen Requirements:
4 light blue-top (citrate whole blood) tubes. Store specimen at room temperature after collection.


  • Please call 814-333-5182 to schedule this test. This specimen MUST be collected only on TUESDAY or FRIDAY morning at Meadville Medical Center Laboratory. Specimen must arrive at performing lab within 4 hours.
  • Specimens that are clotted, hemolyzed, grossly lipemic or having platelet count <100,000/mm3 are unacceptable.

Days Set Up: Monday through Friday

CPT Information:
85576 – x 7