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Blood Counts and Blood Clots

Cancer and its treatment often cause drops in the levels of some types of blood cells, which can be detected with a blood test. The problems caused by low blood counts depend on which type of blood cell is affected. It's important to understand why blood counts can drop and what to expect if they do.

Neutropenia (Low White Blood Cell Counts)

Neutropenia is the term for having too few of an important type of white blood cell. It can put you at higher risk for infections. Learn more about infections and what to watch for.

Anemia (Low Red Blood Cell Counts)

Having too few red blood cells is called anemia. It can cause you too feel very tired or short of breath. Learn what to look for and how to manage it.

Thrombocytopenia (Low Platelet Count)

Having low levels of blood platelets is called thrombocytopenia. People with low platelet counts might bruise or bleed easily. Learn what to watch for and how to manage it.

Blood Clots

Cancer and some cancer treatments can increase your risk of getting blood clots. Learn what causes them, how you might prevent them, & how they can be managed.

Related Topics

Infections in People with Cancer

Infections in people with cancer can be serious. It's important to know the signs and symptoms of an infection and when to get help. Learn more here.

Fevers

Neutropenic fever is a fever in someone who also has a low white blood cell count. Learn how to manage it and when you might need to be seen by a doctor right away.

Understanding Your Lab Test Results

When you have cancer it seems that someone is always taking blood for some kind of test. Here we talk about some of the most common types of blood tests and what they can tell the doctor about your health.

Related Resources

Flyer: What to Do for Low Blood Counts

More Resources

Worksheet: Track Your Chemotherapy Side Effects

Worksheet: Track Your Radiation Therapy Side Effects

Personal Health Manager

Organize your cancer journey with the American Cancer Society Personal Health Manager.

Caregiver Resource Guide

A helpful tool for people who are caring for someone with cancer. View the complete guide here.

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