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what is wbc in blood test

by Prof. Nathanael Rice DDS Published 3 years ago Updated 2 years ago

A WBC count is a blood test to measure the number of white blood cells (WBCs) in the blood. WBCs are also called leukocytes. They help fight infections.

What will happen if WBC increases in blood?

What will happen if WBC increases in blood? People who are suffering from elevated white blood cells may also end up suffering from symptoms like fever, fainting, bruising, weight loss, general pain, and even, in some extreme cases, bleeding . This is due to the white blood cells’ function in the body.

What drugs can increase WBC?

People who have had a splenectomy have a persistent mild elevation of WBCs. Drugs that may increase WBC counts include epinephrine, allopurinol, aspirin, chloroform, heparin, quinine, corticosteroids, and triamterene.

What should be the normal WBC count in blood?

Is there anything else I need to know about a white blood count?

  • A higher than normal amount of neutrophils is known as neutrophilia.
  • A lower than normal amount is known as neutropenia.
  • A higher than normal amount of lymphocytes is known as lymphocytosis.
  • A lower normal amount is known as lymphopenia.

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 happens if WBC count 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.

Why would a WBC level be high?

A high white blood cell count may indicate several things, such as the immune system is working to destroy an infection, a sign of physical or emotional stress, or particular types of cancer. Pregnancy also leads to high white blood cell count, as levels tend to rise from the first trimester, into the third.

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 happens if WBC is low?

A low white blood cell count in adults is less than 4,000 cells per microliter of blood. A low white blood cell count can be an indicator of certain conditions, including lupus, rheumatoid arthritis, vitamin deficiencies, or a side effect of cancer treatment.

When should I be worried about high WBC?

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 infections cause white blood cells to be high?

A high white blood count may mean you have one of the following conditions:A bacterial or viral infection.An inflammatory disease such as rheumatoid arthritis.An allergy.Leukemia or Hodgkin disease.Tissue damage from a burn injury or surgery.

What is a normal WBC level for a woman?

Normal white blood cell count For women, it is a reading of between 4,500 and 11,000 per μl, and for children between 5,000 and 10,000.

Is 14.7 WBC high?

Diagnosis of a high white blood cell count 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.

How long does it take for WBC to return to normal?

Depending on the type of infection, WBC can take from 5 days to 25 days for levels to return back to normal. For instance, a study has found that patients who contracted COVID-19 took between 2 to 6 weeks after the onset of symptoms for their WBC count to return to normal.

How can I raise my white blood cell count?

Some sources of quality protein are fish, eggs, poultry, beef, milk, Greek yogurt and beans. If your diet is poor, or you're having trouble eating, you can take a multivitamin or supplement with vitamin B12 and folate. The body uses vitamin B12 and folate to make WBCs.

How can I raise my white blood cells fast?

Lean meats, such as fish, eggs seafood, and skinless poultry contain high quantities of protein. Great plant based sources include lentils, beans and soy. Zinc is one of the best foods to increase white blood cells you can consume as it can help the body produce more WBCs and makes existing WBCs more aggressive.

How can I increase my WBC count?

Eating Vitamin C will help regulate the levels of white blood cells in your body. Fruits like lemons, oranges, and lime are rich in vitamin C, and so are papayas, berries, guavas, and pineapples. You can also get vitamin C from vegetables such as cauliflower, broccoli, carrots, and bell peppers. Antioxidants.

Does Covid cause high white blood cell count?

Conclusion. In conclusion, our study suggests that WBC count at admission is significantly corelated with death in COVID-19 patients. Higher level of WBC count (≥ 6.16 × 10^9/L) should be given more attention in the treatment of COVID-19.

Is 14.7 WBC high?

A: For an adult, a healthy WBC count is considered to be between 4,000 and 11,000 WBCs per microliter of blood.

Is a white blood count of 11.5 high?

Diagnosis of a high white blood cell count 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 leukemia high white blood count?

At the time of diagnosis, patients can have very, very high white blood cell counts. Typically a healthy person has a white blood cell count of about 4,000-11,000. Patients with acute or even chronic leukemia may come in with a white blood cell count up into the 100,000-400,000 range.

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 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.

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 to tell your doctor before blood draw?

Prior to having your blood drawn, tell your doctor about all prescription and nonprescription medications that you’re currently taking.

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.

What does WBC mean in blood test?

If you've had your blood tested, you may have seen the letters W-B-C among your results. This is your white blood cell (WBC) count. The test can help doctors figure out if something is going on inside your body. It can also help people living with chronic illnesses manage their conditions.

What is the purpose of WBC?

White blood cells fight infection and inflammation. A white blood cell (WBC) count measures the number of white blood cells in your blood. The test isn't specific enough to diagnose a particular disease or condition. Still, it can provide valuable clues as to what might be causing your symptoms. Results can vary depending on the lab your doctor used and how it defines a low, normal, or high range.

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 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 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.

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.

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.

Why does my WBC count drop?

Spleen problems: The spleen also makes WBCs. Infections, blood clots, and other problems can make it swell and not work the way it should. This will drop your WBC count.

Why is my WBC low?

Low WBC counts are often linked to bone marrow problems. Being around certain chemicals, like benzene and pesticides, as well as some types of cancer and cancer treatments including chemotherapy and radiation, can hurt your bone marrow's ability to make WBCs.

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 cells fight infection?

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.

What diseases will tell your body to attack and destroy its own WBCs?

Autoimmune disorders: Some autoimmune diseases, like lupus and rheumatoid arthritis, will tell your body to attack and destroy its own WBCs.

Does benzene harm white blood cells?

Scientific American: "Even at Low Levels, Benzene Takes Toll on White Blood Cells."

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.

What does it mean when your white blood count is low?

A low white blood cell count can be an indicator of certain conditions, including lupus, rheumatoid arthritis, vitamin deficiencies, or a side effect of cancer treatment.

What to do if your white blood cell count is low?

If your white blood cell count is low, and you feel like you have an infection, contact your healthcare provider right away.

Why do doctors order a blood count?

The doctor may order a complete blood count test on a regular basis to check on a patient who has certain conditions, such as an infection or immune system disorder. Other information from the complete blood count will help your doctor come up with a list of possible diagnoses.

How many white blood cells are produced in the human body?

White blood cells help the body identify and fight a variety of diseases and infections. The human body produces about 100 billion white blood cells each day. There are five major types of white blood cells: Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission.

How to minimize the chances of certain diseases and a low white blood cell count?

To minimize the chances of certain diseases and a low white blood cell count: Practice good hygiene. For instance, wash your hands after using the bathroom and before cooking. Be careful around pets and other animals that might transmit infections.

What does it mean when you have too many white blood cells?

If a person has too many—or too few—white blood cells in the body, it may mean that there is a disorder of some kind. A white blood cell count of less than 4,000 cells per microliter of blood is considered low.

What does it mean if your White Blood Cells (WBC), Urine result is too high?

Urine is a generally thought of as a sterile body fluid, therefore, evidence of white blood cells or bacteria in the urine is considered abnormal and may suggest a urinary tract infection such as, bladder infection (cystitis), infection of kidney (pyelonephritis).

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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 WBC at one lab and find that you have a l…
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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…
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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…
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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 value...
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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…
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