Hemostasis Laboratory Manual

What is the process called when platelets form a stable clot?

• Primary hemostasis

• Secondary hemostasis

• Tertiary hemostasis

• Quaternary hemostasis

What is a common use for platelet function tests besides evaluating bleeding?

• Monitoring treatment

• Measuring cholesterol

• Checking blood sugar

• Assessing heart rate

Which of the following is a limitation of closure time assays?

• They do not detect all platelet function disorders

• They are complex to perform

• They are not available in healthcare facilities

• They measure blood pressure.

What is the primary function of platelet function tests?

• To evaluate blood clotting ability

• To determine platelet count

• To analyze blood glucose levels

• To assess the risk of bleeding disorders

What is the function of the endothelial cell in the in vivo haemostasis diagram?

• To activate platelets

• To measure glucose levels

• To count red blood cells

• To measure blood pressure

What is the role of optical density in platelet aggregation testing?

• It measures blood pressure

• It determines the resistance to light passing through the tube

• It calculates cholesterol levels

• It measures heart rate.

Which technique is used to determine PLT function?

• VerifyNow assay

• Light scattering method

• Classical PLT aggregometry

• Serum

Which factor is primarily responsible for the adhesion of platelets to the site of vascular injury?

• Collagen

• Fibrinogen

• Thrombin

• Von Willebrand Factor (VWF)

Which reagent is primarily used to prepare a blood smear for platelet analysis?

• Fixative solution

• Staining solution

• Buffer solution

• None of the above.

What should be done after counting the platelets in 5 different fields?

• Comment on your result

• Calculate their average

• Use the formula to estimate platelet number

• Place the slide under the microscope.