What does Normal WBC count mean?
| Age | Normal Count Range أ—10^3/MCL |
| At Birth | 1,000 – 26,000 |
| 1- 3 Days Newborn | 7,000 – 23,000 |
| 1 Week Newborn | 6,000 – 21,000 |
| 3 – 9 Months Toddlers | 5,000 – 10,000 |
| Red blood cell count | Male: 4.35-5.65 trillion cells/L* (4.35-5.65 million cells/mcL**) Female: 3.92-5.13 trillion cells/L (3.92-5.13 million cells/mcL) |
|---|---|
| Hematocrit | Male: 38.3-48.6 percent Female: 35.5-44.9 percent |
| White blood cell count | 3.4-9.6 billion cells/L (3,400 to 9,600 cells/mcL) |
What are the reasons for low WBC count?
People with the following conditions typically have low WBC counts:
- Autoimmune diseases, such as rheumatoid arthritis
- Cancer treatment like radiation
- Infections like HIV and hepatitis
- Antipsychotic medications
- Agranulocytosis, which is when your body doesn't make enough neutrophils
- Neutropenia, which is when your body has a low level of neutrophils
What is a dangerously high WBC count?
The specific number for high (above normal) white blood cell count varies from one lab testing facility to another, but a general rule of thumb is that a count of more than 10,500 leukocytes in a microliter of blood in adults is generally considered to be high, while 4,500-10,500 is considered within the normal range.
What number would be considered low for WBC?
The definition of low white blood cell count varies from one medical practice to another. In general, for adults a count lower than 4,000 white blood cells per microliter of blood is considered a low white blood cell count. For children, that threshold varies with age.
What is the average WBC count?
The normal number of WBCs in the blood is 4,500 to 11,000 WBCs per microliter (4.5 to 11.0 × 10 9 /L). Normal value ranges may vary slightly among different labs. Some labs use different measurements or may test different specimens. Talk to your provider about your test results.
What are normal WBC ranges?
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. Some labs use different measurements or may test different specimens. Talk to your provider about your test results.
What number of WBC is high?
Diagnosis of a high white blood cell count The test will measure the number of white blood cells per microliter in your blood. 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.
What happens if WBC is high?
Produced in your bone marrow, they defend your body against infections and disease. But, when there are too many white blood cells, it usually means you have infection or inflammation in your body. Less commonly, a high white blood cell count could indicate certain blood cancers or bone marrow disorders.
What is an alarming WBC count?
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 is a WBC count?
A WBC count is the number of white blood cells per volume of blood. Be advised, however, that there is no one number that defines a "normal" or a typical WBC count.
Why is WBC count expressed in different units?
The count may be expressed in one of several different types of units because there is variation depending on which unit of measurement a particular lab uses. Different labs will also have their own definition of what constitutes a "high" or a "low" WBC count.
What does it mean when your WBC is high?
A high WBC count could mean that there's inflammation or an infection somewhere in the body. In some cases, it might be clear that it's related to an existing disease or condition, in which case, the symptoms of that disease might be present.
What does it mean when your WBC goes up?
1 As the WBC count goes up, it could mean inflammation is happening somewhere in the body. As the WBC count goes down, it could mean inflammation is resolving.
What medications can cause a low WBC?
Some medications that treat IBD, such as 6-MP and Imuran, may cause the WBC count to be lower than normal. 1 A gastroenterologist can help put a low WBC count into perspective when these drugs are being used to treat IBD.
What does a high WBC mean?
A high WBC count could indicate that there' s an infection or inflammation in the body. 2 . A normal WBC count is not an exact number but instead is a value somewhere above what would be considered low and below what would be considered high. The WBC count result is used along with other test results to monitor the status of a disease or condition.
Why is my WBC count abnormal?
Abnormal WBC Count in IBD. A WBC count could be out of the normal range due to some medications that are used to treat IBD. In particular, corticosteroids such as prednisone may cause an increase in white blood cells.
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.
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.
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.
What does a low WBC count mean?
A low or high WBC count can point to a blood disorder or other medical condition.
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, ...
How to draw blood from a child?
Healthcare providers use a different technique when drawing blood from young children and infants: Providers first puncture the skin with a lancet (a pricking needle), and then use a test strip or a small vial to collect the blood. Results are sent to a lab for review.
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 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 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.
Why do we need CBCs?
With one sample of blood, CBCs can help screen for hundreds of disorders, conditions and infections. A CBC can detect conditions early, sometimes before you have symptoms, so treatment can start as soon as possible. CBCs are an essential tool in maintaining good overall health.
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.
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.
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.
Purpose of The Test
Normal Reference Range of Values
- No hard-and-fast number defines what a "normal" WBC count is. Instead, the results are reported in relation to the normal expected range of values within a population. Anything below this range is low, and anything above this range is considered high.3 Labs can also differ in defining a high or a low WBC count. So, it is possible to have a normal W...
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…