How many white blood cells should a normal person have?
The normal white blood cell count in a healthy adult is between 4,000 and 11,000 WBCs per microliter (μl or mcL) or cubic millimeter (mm3) of blood, though this may differ between males and females, and healthy children and young people usually have more.
Which disease can affect the normal white blood cell count?
While an abnormal white blood cell count can point to a blood disorder or other medical condition, there are a variety of causes for both a high or low count. A high white blood cell count (leukocytosis) can be triggered by: Chronic infection. Chronic inflammatory diseases. Malignancy. Medications such as steroids. Physical/environmental stresses.
What is considered an abnormal white blood cell count?
Reference ranges for laboratories are calculated statistically, based on what is ‘normal’ for the population they serve. However, for adults, typically any value above around 11,000 white blood cells per microlitre of blood is considered an elevated white blood cell count.
What is a dangerous white blood cell count?
What is a dangerous white blood cell count? It can vary by age and gender, but you are considered to have a low white blood cell count with less than 4,500 white blood cells per microliter of blood. The lower this number goes, the more susceptible you are to infections.
What does a high white blood cell count indicate?
Leukocytosis, or high white blood cell count, can indicate a range of conditions, including infections, inflammation, injury and immune system disorders. A complete blood count (CBC) is usually performed to check for leukocytosis.
Is WBC 10.2 normal?
The normal range for your WBC is usually 4,500 to 11,000 cells per microliter. Your WBC is generally considered high if it is greater than 11,000 cells per microliter.
Is a white blood cell count of 11.8 high?
In general, for adults a count of more than 11,000 white blood cells (leukocytes) in a microliter of blood is considered a high white blood cell count.
What level of WBC is alarming?
How many white blood cells (WBCs) someone has varies, but the normal range is usually between 4,000 and 11,000 per microliter of blood. A blood test that shows a WBC count of less than 4,000 per microliter (some labs say less than 4,500) could mean your body may not be able to fight infection the way it should.
Is a white blood cell count of 10 high?
Normal Results The normal number of WBCs in the blood is 4,500 to 11,000 WBCs per microliter (4.5 to 11.0 × 109/L). Normal value ranges may vary slightly among different labs.
What is a dangerously high WBC count?
A normal white blood cell count is generally about 4,500 to 11,000/μL. White blood cell counts that are too high or too low may be dangerous, depending on the cause. A high white blood cell count is called leukocytosis, which is generally diagnosed when white blood cell levels exceed 11,000/μL.
What WBC indicates viral infection?
In contrast, leukopenia (WBC < 4,000/mm 3) can indicate a viral infection or some bacterial infections, including overwhelming ones; bone marrow failure; collagen or vascular diseases such as lupus; liver or spleen disease; radiation; drug toxicity; autoimmune disease; or dietary deficiency, such as vitamin B 12 ...
Is 8.2 WBC count normal?
The normal range for WBC is 5 to 10 K/uL. Your CBC will also measure what's called the ANC (absolute neutrophil count) That's the specific number of white blood cells in your blood that fight infection.
What Is A Complete Blood Count?
A complete blood count (CBC) is a blood test that is commonly ordered by doctors. A CBC is often ordered as part of a complete physical or when you...
What Is A Red Blood Cell, and What Does A Red Blood Cell Count Tell?
Red blood cells are the part of the blood that carry oxygen and carbon dioxide throughout the body. Red blood cells are made up of hemoglobin, whic...
What Is A White Blood Cell, and What Does A White Blood Cell Count Tell?
White blood cells are the part of the blood that fight infections. White blood cells are measured in thousands per cubic milliliter (K/ml3) of bloo...
What Kinds of Disorders Can Be Detected With A Complete Blood Count?
Doctors may order a CBC when the patient has signs of infection, is weak or tired, or has inflammation (swelling), bruising, or bleeding. Some of t...
What does it mean when your WBC is higher than normal?
Having a higher or lower number of WBCs than normal may indicate an underlying condition. A WBC count can detect hidden infections within your body and alert doctors to undiagnosed medical conditions, such as autoimmune diseases, immune deficiencies, and blood disorders.
What does a low WBC count mean?
A low or high WBC count can point to a blood disorder or other medical condition.
How many WBCs are normal for a newborn?
According to the University of Rochester Medical Center (UMRC), these are the normal ranges of WBCs per microliter of blood (mcL): Age range. WBC count (per mcL of blood) newborns. 9,000 to 30,000.
Why is my WBC low?
inflammatory conditions, such as arthritis and bowel disease. stress. exercise. tissue damage. pregnancy. allergies. asthma. some medications, such as corticosteroids. After diagnosing the cause of a high or low WBC count and recommending a treatment plan, your doctor will periodically recheck your WBCs.
How to prepare for WBC?
A WBC count requires no specific preparation. You simply schedule an appointment with your doctor or set up an appointment at a local medical laboratory. Certain medications can interfere with your lab results and either lower or increase your WBC count.
What is a WBC test?
A white blood cell (WBC) count is a test that measures the number of white blood cells in your body. This test is often included with a complete blood count (CBC). The term “white blood cell count” is also used more generally to refer to the number of white blood cells in your body. There are several types of white blood cells, ...
What are the cells that fight infections called?
WBCs, also called leukocytes, are an important part of the immune system. These cells help fight infections by attacking bacteria, viruses, and germs that invade the body. White blood cells originate in the bone marrow but circulate throughout the bloodstream. There are five major types of white blood cells: neutrophils.
Overview
White blood cells, also known as leukocytes, are responsible for protecting your body from infection. As part of your immune system, white blood cells circulate in your blood and respond to injury or illness.
Function
White blood cells protect your body against infection. As your white blood cells travel through your bloodstream and tissues, they locate the site of an infection and act as an army general to notify other white blood cells of their location to help defend your body from an attack of an unknown organism.
Anatomy
Your white blood cells are in your bloodstream and travel through blood vessel walls and tissues to locate the site of an infection.
Conditions and Disorders
If you have a low white blood cell count, you are likely to get infections ( leukopenia ). If your white blood cell count is too high ( leukocytosis ), you may have an infection or an underlying medical condition like leukemia, lymphoma or an immune disorder.
What is a WBC count?
[1] A white blood cell (WBC) count measures the amount of white blood cells in a sample of a person’s blood.
How many WBCs are in a human body?
The normal range for a white blood cell count in a healthy adult is between 4,000 and 11,000 WBCs per microliter (μl or mcL) or cubic millimeter (mm3) of blood, though this may differ between males and females, ...
How many WBCs are in a microliter of blood?
A: For an adult, a healthy WBC count is considered to be between 4,000 and 11,000 WBCs per microliter of blood. This is on average – some healthy individuals may have a higher or lower count.
What causes low WBC?
Low white blood cell (WBC) count 1 Viral or bacterial infection 2 Diminished bone marrow function 3 Cancer 4 Autoimmune disorders including rheumatoid arthritis and HIV/AIDS 5 Leukemia 6 Lupus 7 Tuberculosis 8 Cancer treatment such as radiation and chemotherapy, as well as other medications 9 Aplastic anemia
What does white blood cells do?
White blood cells also defend the body from allergens, mutated cells, such as cancer, and foreign matter, such as splinters, and remove dead cells, old red blood cells and other debris. [1] A white blood cell count checks both the overall levels of white blood cells in the blood, as well as the overall proportion of different types ...
What causes low white blood cells?
A low white blood cell count can be caused by issues including: Cancer treatment such as radiation and chemotherapy, as well as other medications. A low white blood cell count may cause symptoms such as fever, chills, headache and bodyache.
What is the threshold for low WBC?
The threshold for a low white blood cell count (leukopenia) varies between individuals and cases, but is generally considered to be anything lower than 4,000 white blood cells per μl of blood in an adult . A low white blood cell count can be caused by issues including:
What causes low white blood cells?
Infections or other problems that cause abnormally low white blood cell count or high white blood cell count. Several types of cancer, including leukemia and lymphoma. Side effects of chemotherapy and some prescription medications. Vitamin and mineral deficiencies.
What is CBC blood test?
Complete Blood Count. A complete blood count (CBC) is a blood test. It gives your provider information about your blood and overall health. CBCs help providers diagnose, monitor and screen for a wide range of diseases, conditions, disorders and infections.
What is CBC in healthcare?
A CBC gives your provider a picture of your overall health. Using a small amount of blood, a CBC can help detect hundreds of conditions, disorders and infections. It allows your provider to monitor your health, screen for disease and plan and adjust treatment.
What does differential mean in blood work?
The differential looks at how many of each kind of white blood cell you have. Hemoglobin tests measure hemoglobin, the protein in red blood cells that carries oxygen. Hematocrit describes the concentration of red blood cells in your blood. A CBC tells your provider: How many new blood cells your body is creating.
What does CBC mean in medical terms?
Providers use this test to screen for diseases and adjust treatments. A CBC measures and counts your blood cells. Your provider takes a sample of your blood and sends it to a lab.
What does CBC test show?
What does a CBC detect? A CBC blood test can help your provider diagnose a wide range of conditions, disorders, diseases and infections, including: Anemia (when there aren’t enough red blood cells to carry oxygen through the body). Bone marrow disorders, such as myelodysplastic syndromes.
How long does it take for blood test results to come back?
Results are usually ready within a few days. Sometimes it only takes 24 hours to get results. Your provider will contact you to explain the results and discuss next steps. If your blood cell counts are outside of the normal range, your provider may order follow-up tests.
What is the medical term for white blood cells?
WBC is: a medical term for “white blood cells”, white cells also called “Leucocytes”. Leucocytes is a general medical term for many blood cells that differ in their morphology and specific function, however all WBCs are made for body defense against microbes.
What does WBC mean at birth?
What does Normal WBC count mean? Normal WBC count at birth is the highest count during the human life, this is due to activity of bone marrow at birth and to immunize the neonate upon birth, see normal CBC value in newborn, normal count range of white blood cells continue to be low as we go in the age until puberty, ...
What does it mean when your white blood cell test results show you are being treated?
If you are already being treated for a white blood cell disorder, your results may show if your treatment is working or whether your condition has improved. If you have questions about your results, talk to your health care provider.
What does it mean when your white blood count is low?
A low white blood count may mean you have one of the following conditions: Bone marrow damage. This may be caused by infection, disease, or treatments such as chemotherapy. Cancers that affect the bone marrow. An autoimmune disorder, such as lupus (or SLE) HIV/AIDS.
What is the name of the test that measures the amount of white blood cells in your blood?
Basophils. A white blood count measures the total number of these cells in your blood. Another test, called a blood differential, measures the amount of each type of white blood cell. Other names: WBC count, white cell count, white blood cell count.
Why is a high white blood count important?
A white blood count is most often used to help diagnose disorders related to having a high white blood cell count or low white blood cell count. Disorders related to having a high white blood count include: Autoimmune and inflammatory diseases, conditions that cause the immune system to attack healthy tissues. Bacterial or viral infections.
How to take blood sample from arm?
A health care professional will take a blood sample from a vein in your arm, using a small needle. After the needle is inserted, a small amount of blood will be collected into a test tube or vial. You may feel a little sting when the needle goes in or out.
What are the causes of low white blood cells?
Diseases that can lower your white blood count include some types of cancer and HIV/AIDS, a viral disease that attacks white blood cells. Certain medicines, including chemotherapy, may also lower the number of your white blood cells. There are five major types of white blood cells: Neutrophils. Lymphocytes.
Why do we need white blood cells?
White blood cells are part of the immune system. They help your body fight off infections and other diseases. When you get sick, your body makes more white blood cells to fight the bacteria, viruses, or other foreign substances causing your illness. This increases your white blood count.
What does it mean when your white blood count is high?
A high white blood cell count can also be a reaction to medication. Platelet count. A platelet count that's lower than normal (thrombocytopenia) or higher than normal (thrombocytosis) is often a sign of an underlying medical condition, or it may be a side effect from medication.
Why is my white blood count low?
A low white blood cell count (leukopenia) may be caused by a medical condition, such as an autoimmune disorder that destroys white blood cells, bone marrow problems or cancer. Certain medications also can cause white blood cell counts to drop.
Why is my red blood cell count higher than normal?
A red blood cell count that's higher than normal (erythrocytosis), or high hemoglobin or hematocrit levels, could point to an underlying medical condition , such as polycythemia vera or heart disease.
How are hemoglobin and hematocrit related?
The results of your red blood cell count, hemoglobin and hematocrit are related because they each measure aspects of your red blood cells. If the measures in these three areas are lower than normal, you have anemia. Anemia causes fatigue and weakness.
What happens if your platelet count is below normal?
If your platelet count is outside the normal range, you'll likely need additional tests to diagnose the cause. For specifics about what your complete blood count results mean if they fall outside the normal ranges, talk to your doctor. By Mayo Clinic Staff.
Why do you need a complete blood count?
A complete blood count is a common blood test that's done for a variety of reasons: To review your overall health. Your doctor may recommend a complete blood count as part of a routine medical examination to monitor your general health and to screen for a variety of disorders, such as anemia or leukemia. To diagnose a medical condition.
Why do doctors use complete blood counts?
If you've been diagnosed with a blood disorder that affects blood cell counts, your doctor may use complete blood counts to monitor your condition. To monitor medical treatment. A complete blood count may be used to monitor your health if you're taking medications that may affect blood cell counts.
How many white blood cells are there in a microliter?
How many white blood cells (WBCs) someone has varies, but the normal range is usually between 4,000 and 11,000 per microliter of blood. A blood test that shows a WBC count of less than 4,000 per microliter (some labs say less than 4,500) could mean your body may not be able to fight infection the way it should.
What to do if your white blood count is low?
Follow-up Tests. If there's no clear reason for a low white blood cell count, your doctor will probably want to do the test again, or do a differential or "diff" along with the CBC. This other test gives a lot more detail. There are normal ranges for each of the five kinds of WBCs, and some problems only affect one type.
What to do if your WBC is low?
When your WBC count is very low, you may need to take steps to avoid an infection. Your doctor may ask you to see a hematologist. This is a specialist who has extra training for diagnosing and treating blood count problems.
What is the function of white blood cells?
White blood cells, also called leukocytes, fight infection. They move throughout your body in your blood, looking for invaders. And your body is continuously making a fresh supply. Your doctor measures how many of these cells you have by sending some of your blood to a lab to do a complete blood count, or CBC. ...
Does HIV kill WBCs?
HIV kills a specific kind of white blood cell. Medicines: Some drugs, including antibiotics, can destroy WBCs. Nutrition: Not eating well or low levels of certain vitamins, such as folic acid and B12, can affect how your body makes WBCs . Alcohol abuse can mess with the nutrients in your body and with WBC counts, too.
Is WBC normal?
Many times, a repeated test will show that your WBC count is normal. Your doctor may want to do more tests, based on the symptoms you have. For instance, you might get checked for strep throat or mono. Other blood tests can look for a viral infection, inflammation, or allergies.
What is a high white blood cell count?
White blood cell counts that are too high or too low may be dangerous, depending on the cause. A high white blood cell count is called leukocytosis, which is generally diagnosed when white blood cell levels exceed 11,000/μL. This occurs when the immune system is stimulated in ...
Which cells make up 30% of the total number of white blood cells?
They make up about 30% of the total number of white blood cells. Monocytes. These white blood cells have a longer lifespan than other white blood cells and help to break down bacteria. They make up about 8% of the total number of white blood cells. Eosinophils.
What happens if your white blood cells are too high?
What Are White Blood Cells? White blood cell counts that are too high or too low may be dangerous, depending on the cause. Infection can cause spikes, as well as blood cancers and other conditions. White blood cells (leukocytes) make up about 1% of our blood and they help protect the body against illness and disease.
What causes high white blood cells?
Causes of high white blood cell counts include: Infections, such as bacterial infections. Leukemia and lymphoma, which are types of cancers. Trauma. Extensive wounds or burns. Acute or chronic inflammation such as from autoimmune disease, allergies, and other inflammatory problems. Cigarette smoking.
Which white blood cells kill parasites?
Eosinophils. These white blood cells attack and kill parasites and cancer cells. They also help with allergic responses. They make up about 1 to 3% of the total number of white blood cells. Basophils. These white blood cells release histamine during an allergic reaction which promotes blood flow to the body’s tissues.
Purpose of The Test
Interpreting Results
- The WBC count isn't specific enough to diagnose any particular disease. Abnormal values are simply an indication that something may be wrong and what the possible causes may be. If your WBC count is high, you have what is called leukocytosis. Among some of the possible causes of leukocytosis are:7 1. A bacterial, fungal, or parasitic infection 2. Inflammatory conditions 3. Burn…
Follow-Up Tests
- If your WBC count is abnormal, your healthcare provider may order additional tests depending on your symptoms and medical history. These may include tests to see if you have: 1. An infection: Your healthcare provider may order a urinalysis, for example, if they think you have a urinary tract infection. If they believe you have a viral infection, they might contain a polymerase chain reactio…
Summary
- White blood cells help fight infection and inflammation. A white blood cell (WBC) count measures the number of white blood cells in a sample of blood. Many conditions, including infections, medications, inflammatory diseases, and blood or bone marrow disorders, can cause an abnormal WBC count. The WBC count is measured in a reference range of values by the number of blood c…
A Word from Verywell
- It's important to discuss your WBC count results—and any other test you undergo—with your doctor to understand what they mean. Doing so allows you to make informed choices about your health. It is also important not to jump to conclusions if you see a "high" or "low" notation on your WBC count results. It is only by comparing the test results to different blood test values that a h…
What Is A White Blood Cell (WBC) Count?
- Healthy blood contains a certain percentage of white blood cells (WBCs, leukocytes or leucocytes) which, as part of the body’s immune system, help the body fight infection. A white blood cell (WBC) count measures the amount of white blood cells in a sample of a person’s blood. The number of white blood cells in the body differs between individuals or at different ages in th…
White Blood Cells
- There are several kinds of white blood cells (WBCs), including neutrophils, eosinophils, lymphocytes, monocytes and basophils. Each variety plays a different role in protecting the body from foreign pathogens such as viruses, bacteria, fungi and parasites.White blood cells also defend the body from allergens, mutated cells, such as cancer, and foreign matter, such as splin…
Test Procedure
- To carry out a white blood cell count, a doctor will draw a blood sample, usually from a vein in the arm or the back of the hand. This is a common procedure, and side effects are rare, but may include lightheadedness, bleeding or infection. No special preparation is required for a white blood cell count, but a person should inform their doctor of any medications they are taking, as t…
White Blood Cell Count FAQs
- Q: What is a healthy white blood cell (WBC) count? A:For an adult, a healthy WBC count is considered to be between 4,000 and 11,000 WBCs per microliter of blood. This is on average – some healthy individuals may have a higher or lower count. Q: What is leukocytosis? A: Leukocytosis is the condition of having an abnormally high WBC count. In most ca...