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Platelet Count

Also known as : Platelet aggregation studies ; PFT ; Platelet function assay ; PFA .
Formal name : Platelet Function Tests
Related tests : CBC ; Blood smear ; Platelet count ; PT ; PTT ; Bone marrow biopsy ; Coagulation factors ; von Willebrand factor ( VWF ) .

Why should I do it ?
To help determine the cause of or potential for excessive bleeding, to monitor and evaluate platelet function, and to monitor the presence and effectiveness of antiplatelet medications .

When should I do it ?
When you are bruising easily or experiencing excessive bleeding, when you are taking medications that can alter platelet function, and prior to or during certain surgeries . 

What Kind of Sample is Needed ?
A blood sample drawn from a vein in your arm . 

Test Preparation Needed ?
You may be instructed to refrain from taking drugs that can affect the results of these tests, such as aspirin, non-steroidal anti-inflammatory drugs ( NSAIDs ) , or any over-the-counter medications that contain drugs such as these. The most common NSAIDs include ibuprofen, naproxen and COX-2 inhibitors .

None .