Types of blood lymphocytes

There are three types of lymphocytes, each of which has a specific function in the body:

There are three types of lymphocytes, each of which has a specific function in the body:

1... T cell

T cells are the most abundant type of lymphocyte and make up about 70% of lymphocytes in the bloodstream.. These cells are produced in the bone marrow, but mature in the thymus gland.. They play a role in cellular immunity.. This means that without the use of antibodies, they can activate other immune cells to attack foreign agents.. A subset of T cells called cytotoxic T cells. directly They attack virus-infected cells or cancer cells.

2... cell B

B cells make up approximately 25% of circulating lymphocytes.. They are produced and mature in the bone marrow and play a role in humoral immunity.. In other words, they produce antibodies in response to infection or disease.. These antibodies bind to pathogens and direct the immune system's attack.. They also help the body respond if it remembers the pathogen again. It means?.. dangerous value What is wbc?

3.... natural killer cells

Natural killer (NK) cells make up approximately 7% of circulating lymphocytes and act as the first line of defense of the immune system. They are made in the bone marrow, lymph nodes, thymus gland, and liver and are part of the body's innate immunity. This means they directly attack and destroy infectious or cancerous cells without the need for antibodies. NK cells are less precise than B or T they have, but they reach the place of infection faster and react to it.

What is the function of lymphocytes?

Before we talk about how to interpret a lymphocyte in a blood test, it is good to explain the function of this cell.... Lymphocytes act like the body's army.... They help the immune system fight cancer cells, viruses and bacteria (antigens).. Antibodies are infected cells.. They destroy the virus and tumor cells and regulate the immune system.

Lymphocytes are made in the bone marrow and enter the bloodstream after maturation.... Mature lymphocytes are found in the blood and all parts of the lymphatic system... The lymphatic system is a set of organs, vessels and tissues that both protect the body against infection and play a role in maintaining fluid balance.

Common tests to check lymphocytes

Today, a variety of blood tests are used to check the number of lymphocytes, including:

1... Complete blood count test

A complete blood count (CBC) test is one of the most common tests recommended to check the status of lymphocytes...

• White blood cells
• Red blood cells
• Platelets (cells involved in blood clotting)
• Hemoglobin (the protein in red blood cells that carries oxygen throughout the body)
• Hematocrit (the percentage of red blood cells relative to the total blood volume)

If blood is drawn just for a CBC test, you don't need to fast... but in other cases, you may need to stop eating and drinking for a few hours before the test.

2... flow cytometry

Flow cytometry is a laser-based test that detects chemical and physical differences in cells or particles. Doctors usually use this method when they need a lot of information about bone marrow, blood, and other body fluids. Flow cytometry can help diagnose various diseases, including infectious diseases and cancer.

3... Screening of B and T cells

Doctors usually prescribe this test if they see symptoms that indicate a weak immune system.... This test is also used to check the symptoms of leukemia and bone marrow cancer and to diagnose cancerous and non-cancerous diseases.

To perform this test, the doctor needs your blood sample.... This sample can be taken by pinching the tip of the finger or the heel (in babies).... After taking a blood sample, the test is done in 2 steps:

• Lymphocytes are separated from other blood components.
• A marker is added to the blood sample so the doctor can distinguish between T and B cells.

See more: List of Best Hematology Doctors

Normal amount of lymphocytes in blood test

The number of lymphocytes in a blood test may change under the influence of factors such as age, race, gender, altitude from the place of residence and lifestyle... Also, this value can be different.. because different methods may be used for each different laboratory and a different method may be used.. Results Test.

What should be the amount of lymphocytes in the blood test?

Lymphocytes make up approximately 20 to 40% of white blood cells.. Although the number of these cells is affected by various factors, the normal range in adults is between 1,000 and 4,800 lymphocytes per microliter of blood.. Any abnormal changes in the number of lymphocytes may be a sign of disease.

What is the value of lymphocytes in children's blood tests?

The number of lymphocytes in healthy children may fluctuate within a certain range.... In children, the normal range of lymphocytes in a blood test is between 3000 and 9500 cells per microliter of blood.

Interpretation of lymphocytes in blood test

Although the Lyme count on a blood test alone cannot lead to a definitive diagnosis of the disease, when viewed along with other CBC test results, it can help the doctor make an accurate diagnosis and decide whether to perform additional tests.. Therefore, it is important to consult your doctor about your blood test results to get a more accurate interpretation of the data.

The cause of high lymphocytes in the blood test

Lymphocytosis or increase in the number of lymphocytes is a sign of immune system activation in response to a specific disease or medical condition. This condition is common in acute (sudden and short-term) and chronic (persistent or repeated) infections, and may also occur in certain cancers or thyroid glandular problems.

Among the most common possible causes of increased WBC in blood tests, the following can be mentioned:

• Acute lymphoblastic leukemia (a type of aggressive blood cancer)
• Chronic lymphocytic leukemia (blood cancer with slow progression)
• Viral infections of the liver (hepatitis A, B and C)
• Human immunodeficiency virus (HIV)
• Hypothyroidism
• Lymphoma (cancer of the lymphatic system)
Mononucleosis (usually caused by Epstein-Barr virus) whooping cough
• syphilis (sexually transmitted bacterial infection)
• Toxoplasmosis (parasitic infection)

Treatment of lymphocytosis varies depending on the cause and may include antibiotics, antiviral drugs, thyroid hormones or, in cancer-related cases, chemotherapy, immunotherapy, or stem cell transplantation.

What is the sign of a low number of lymphocytes in a blood test?

Lymphopenia, or a decrease in the number of lymphocytes, indicates that either lymphocytes are being destroyed or are not being produced in sufficient quantities.... In either case, a decrease in lymphocytes can reduce the body's ability to fight infection.

Decreasing the number of lymphocytes may be due to autoimmune diseases or severe and widespread infections in the body.. Also, some drugs and rare genetic disorders can suppress the bone marrow and interfere with the production of lymphocytes.

• Aplastic anemia (reduction of red blood cells due to bone marrow failure)
Chemotherapy or radiation therapy
• Covid-19 (Corona disease)
• Hodgkin lymphoma (one of the 2 main types of lymphoma)
• Lupus (an autoimmune disease that affects multiple organs)
• Malnutrition
• Severe combined immunodeficiency (a rare genetic disorder with a very weak immune response)
• Typhoid fever or typhoid (a type of bacterial infection)
• Use of immunosuppressive drugs, which are usually prescribed to prevent rejection of the transplanted organ or to treat autoimmune diseases (for example, to control the symptoms of MS).

Like lymphocytosis, the treatment of lymphopenia varies depending on the cause. In severe cases, a drug called immunoglobulin (IG) may be given by injection to increase the number of lymphocytes..

Learn more:What does Wbc mean in a blood test?. What is the dangerous value of wbc?

Signs of low or high lymphocytes in blood test

Lymphocytosis and lymphopenia usually do not cause specific symptoms on their own...but if a blood disorder or cancer causes an increase in the number of lymphocytes, symptoms related to that disease may appear.These symptoms often include:

• Swelling of lymph nodes
• Night sweat
• Fever
Abdominal pain
• Decreased appetite
• shortness of breath

A change in the number of any of the blood cells, including white blood cells, red blood cells, or platelets, may be a sign of an underlying problem, so it should be checked by a doctor... To learn more about this, you can read the article "Are Low Blood Platelets Dangerous" on the GCORP LLC website.

Endword

Lymphocytes are a type of white blood cells that are made in the bone marrow and play an important role in the body's defense against pathogens.... Normally, a certain number of these cells circulate in the blood, but in some diseases, their amount may increase or decrease abnormally.... If you need an accurate interpretation of lymphocytes in a blood test, you can consult online through a website Hematologist LLC, GLC Co.. Oncology Doctor...

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