The blood will be evaluated in a laboratory and the results will be sent to your doctor. Certain conditions can affect the results of your blood test. Results can vary widely from lab to lab.
Note that the reference ranges listed here are measured in microliters mcL , and are only approximate. Having a high percentage of neutrophils in your blood is called neutrophilia. This is a sign that your body has an infection. Neutrophilia can point to a number of underlying conditions and factors, including:. Neutropenia is the term for low neutrophil levels. Low neutrophil counts are most often associated with medications but they also can be a sign of other factors or illness, including:.
Very low neutrophil counts can lead to life-threatening infections. If your neutrophil counts are high, it can mean you have an infection or are under a lot of stress. It can also be a symptom of more serious conditions.
Neutropenia, or a low neutrophil count, can last for a few weeks or it can be chronic. It also can be a symptom of other conditions and diseases, and it places you at greater risk for acquiring more serious infections. If abnormal neutrophil counts are due to an underlying condition, your outlook and treatment will be determined by that condition. If your doctor orders a CBC with differential or an ANC screen, you may find it useful to ask the following questions.
A complete blood count, or CBC, measures several components of your blood and can help diagnose a broad range of conditions, from anemia and to cancer.
White blood cells, or WBCs, are an important part of your immune system. They help fight infections by attacking bacteria, viruses, and germs.
An increased number of mature neutrophils in the blood is not usually a problem in itself. Therefore, doctors focus on treating the condition or disorder that caused the number of neutrophils to increase. Merck and Co. From developing new therapies that treat and prevent disease to helping people in need, we are committed to improving health and well-being around the world. The Manual was first published in as a service to the community.
Learn more about our commitment to Global Medical Knowledge. This site complies with the HONcode standard for trustworthy health information: verify here. Common Health Topics. Hyperviscosity syndrome. White Blood Cell Disorders. Test your knowledge. Acute myeloid leukemia AML is a life-threatening disorder in which certain blood cells become cancerous and rapidly replace normal cells in the bone marrow.
As normal blood cells are replaced by cancerous cells, people with AML become anemic from too few red blood cells. They develop infections easily because there are too few white blood cells to fight infections, and their blood does not clot well because of too few platelets. Which of the following additional symptoms of AML may be caused by having too few white blood cells? More Content. A low neutrophil count is one of the serious side effects of chemotherapy.
Via the mechanisms above, a decreased neutrophil count could be due to:. If the neutrophil count is abnormal on a CBC, further evaluation is needed. This usually begins with a history and physical exam keeping in mind the potential causes of abnormal levels. A CBC may also be repeated to rule out lab error. Further testing will depend on the possible causes of an abnormality and may include:. Examples: Olivia's neutrophil count was low following her chemotherapy treatment, so her oncologist recommended she begin antibiotics to prevent an infection.
Often, it means you have a bacterial infection. The body makes more neutrophils white blood cells when it needs to fight a foreign invader like bacteria. Physical and emotional stress can cause a spike in these blood cells, too. Absolute neutrophil count tells the doctor the number of neutrophils in your blood. A count above may be a sign of infection, inflammation, leukemia, or intense physical or emotional stress.
COVID does cause the immune system to produce additional white blood cells. Doctors think that people who produce an excessive amount of neutrophils may be at risk for more severe symptoms of COVID. Limiting processed foods and red meats can help ward off cancer risk. These recipes focus on antioxidant-rich foods to better protect you and your loved ones.
Sign up and get your guide! Icahn School of Medicine at Mt. Blood Differential Test. American Cancer Society. Understanding Your Lab Test Results. Updated October 19, Neutrophils: multitasking first responders of immunity and tissue homeostasis.
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