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The Daily Insight

Is a white blood cell count of 3.9 normal

Author

William Smith

Updated on April 18, 2026

White blood cell count varies from person to person. The normal range is usually between 4,000 and 11,000 white blood cells per microlitre of blood. Anything below 4,000 is typically considered to be a low white blood cell count.

What is a dangerously low white blood cell count?

In general, an adult who has fewer than 1,000 neutrophils in a microliter of blood has neutropenia. If the neutrophil count is very low, fewer than 500 neutrophils in a microliter of blood, it is called severe neutropenia.

What is an alarming white blood cell 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.

Is a WBC of 3.8 Bad?

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 count of 3 bad?

In an additional independent study that covered 7 countries, results concluded that each point increase in WBCs was associated with 21% higher 5-year heart disease mortality (after adjustment for risk factors) [48]. A WBC count between 3. 5 (3,500) and 6. 0 (6,000) is considered normal.

What is the most common reason for low white blood cell count?

A low white blood cell count usually is caused by: Viral infections that temporarily disrupt the work of bone marrow. Certain disorders present at birth (congenital) that involve diminished bone marrow function. Cancer or other diseases that damage bone marrow.

What cancers cause low WBC?

Low white blood cell count. Cancers that affect the blood and bone marrow can also lower the count. These types of cancers include leukemia, lymphoma, and multiple myeloma.

How can you improve low white blood cell count?

While no specific foods or diet changes are proven to increase production of white blood cells, if you have low WBC (leukopenia), it is very important to practice good hygiene, hand-washing, and food safety practices. Neutrophils are the cells that fight bacterial infection.

What are symptoms of low white blood cells?

  • Have repeated fevers and infections.
  • Get bladder infections that may make it painful to pass urine, or make you urinate more often.
  • Get lung infections that cause coughing and difficulty breathing.
  • Get mouth sores.
  • Get sinus infections and a stuffy nose.
Is 3.2 WBC too low?

The normal range is usually between 4,000 and 11,000 white blood cells per microlitre of blood. Anything below 4,000 is typically considered to be a low white blood cell count.

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Can low white blood cells be treated?

Doctors treat a low white blood cell count using: Antibiotics to treat any infections. Medicines to push your body to make more white blood cells. Treatment for any diseases that may be causing the count to be low.

What's the cause of low blood count?

Low blood counts can have many causes, including vitamin deficiencies, bleeding, and rare bone marrow failure diseases like aplastic anemia , MDS and PNH. If your blood tests are abnormal, your doctor may do other blood tests or take a sample of your bone marrow to find out why.

What is a normal white blood cell count for a woman?

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

Can stress cause low white cell count?

In addition, stress decreases the body’s lymphocytes — the white blood cells that help fight off infection. The lower your lymphocyte level, the more at risk you are for viruses, including the common cold and cold sores.

What is a normal blood count for a woman?

Red blood cell countMale: 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)HematocritMale: 38.3-48.6 percent Female: 35.5-44.9 percentWhite blood cell count3.4-9.6 billion cells/L (3,400 to 9,600 cells/mcL)

What foods to avoid if you have low white blood cells?

Avoid raw milk, any yogurt or cheeses made with raw milk, and unpasteurized juice. Be sure to wash all fresh fruits and vegetables well. You may want to switch from fresh fruits and vegetables to cooked, canned, or frozen fruits and vegetables during treatment. Make sure that canned foods are safe.

What raises white blood cells?

A high white blood cell count may indicate that the immune system is working to destroy an infection. It may also be a sign of physical or emotional stress. People with particular blood cancers may also have high white blood cells counts.

What viral infections cause low white blood cell count?

Conditions that may cause leukopenia infection, such as influenza, HIV, and hepatitis. inflammatory bowel disease (IBD) granulomatosis with polyangiitis, which is a condition that causes the inflammation of the blood vessels. a deficiency in folate, copper, or vitamin B12.

What should I eat if I have low white blood cells?

Poultry and Lean Meats Foods high in protein, such as lean meats and poultry, are high in zinc — a mineral that increases the production of white blood cells and T-cells, which fight infection. Other great sources of zinc are oysters, nuts, fortified cereal, and beans.

Do low white blood cells make you tired?

Can low white blood cells cause fatigue? Low white bloods cells likely aren’t the cause of fatigue. If you have low WBC and are increasingly feeling fatigued, both are likely symptoms of an underlying issue.

Is low blood count serious?

The most serious complications of low blood cell counts include: Infection. With a low white blood cell count and, in particular, a low level of neutrophils, you’re at higher risk of developing an infection. And if you develop an infection when you have a low white blood cell count, your body can’t protect itself.

How do you fix low blood count?

  1. Rest between activities.
  2. Plan ahead and save your energy for the most important activities.
  3. Avoid or stop activities that make you short of breath or make your heart beat faster.
  4. Ask others for help.
  5. Eat a diet with adequate protein and vitamins.

Is WBC low with Covid?

Low white blood cell counts have been found to contribute to severe disease and death in people with COVID. While you may not be able to prevent a low WBC count, you can take steps to prevent a COVID infection.

How long does it take for white blood cells to increase?

At this point, you are most likely to develop an infection. Your neutrophil count then starts to rise again. This is because your bone marrow restarts normal production of neutrophils. But it may take 3 to 4 weeks to reach a normal level again.

Is 7 a low blood count?

A normal hemoglobin level is 11 to 18 grams per deciliter (g/dL), depending on your age and gender. But 7 to 8 g/dL is a safe level. Your doctor should use just enough blood to get to this level.

What is the normal range for a white blood count?

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.