Platelet Function Assay Using Tirofiban (Antithrombotic Monitoring)

Why This Test Is Done

Your doctor may order this test if you’re taking tirofiban, a medication that temporarily blocks certain proteins involved in blood clotting. The test helps ensure the medication is working safely without causing excessive bleeding. It’s often used in patients undergoing procedures that carry a risk of bleeding, such as angioplasty or stent placement.

What to Expect Before the Test

No special preparation is needed, but you may be asked to stop certain medications (like aspirin) for a few days before the test if directed by your doctor. Bring any recent medications or allergies to your healthcare provider.

During the Test

A small amount of blood is drawn from a vein in your arm. The blood sample is then tested in a lab to measure how platelets interact with tirofiban under controlled conditions. The test typically takes about 30 minutes, including drawing blood and analysis.

What the Results Mean

Results help your doctor determine if your platelet function is within an expected range for safety. If the test shows too little platelet activity, your risk of clotting may be higher. If it shows too much activity, bleeding risks could increase. Your doctor will discuss findings with you in the context of your overall health and treatment plan.