Platelet Count Blood Test: What It Is, When It's Needed, and What the Results Mean

A platelet count blood test is a simple blood test that measures the number of platelets in your blood. Platelets are small, colorless cells that help your blood clot. A normal platelet count is between 150,000 and 450,000 platelets per microliter of blood.

When is a platelet count blood test needed?

Your doctor may order a platelet count blood test if you have any of the following symptoms:

• Easy bruising or bleeding
• Nosebleeds
• Heavy menstrual bleeding
• Blood in your urine or stool
• A family history of bleeding disorders

A platelet count blood test may also be ordered if you are taking any medications that can affect your platelet count, such as aspirin or ibuprofen.

What do the results of a platelet count blood test mean?

A low platelet count can be caused by a variety of factors, including:

• Bleeding disorders
• Certain medications
• Infections
• Cancer
• Pregnancy

A high platelet count can be caused by a variety of factors, including:

• Inflammation
• Infection
• Certain medications
• Some types of cancer

Common Mistakes to Avoid

Here are some common mistakes to avoid when getting a platelet count blood test:

• Don't eat or drink anything for at least 8 hours before the test. This can affect your platelet count.
• Don't take any medications that can affect your platelet count. This includes aspirin, ibuprofen, and other blood thinners.
• Tell your doctor about any recent blood transfusions. This can affect your platelet count.

How to Get a Platelet Count Blood Test

A platelet count blood test is a simple procedure that takes only a few minutes. Your doctor will draw a small amount of blood from your arm and send it to a laboratory for testing. The results of your test will usually be available within a few days.

If you have any questions about your platelet count blood test, be sure to talk to your doctor.

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