A B-monocyte test can show the level of monocytes in the blood, as well as the proportion of monocytes in relation to other white blood cells. An increase or decrease in the level of monocytes can provide important information about what is happening in the body. Monocytes are a type of white blood cell that are involved in the immune system. Monocytes are produced in the bone marrow and make up approximately 2-8% of white blood cells.
Why test B-Monocytes?
A B-Monocyte analysis may be relevant in cases of suspicion of:
- Infections, especially long-term or chronic
- Autoimmune diseases
- Inflammatory conditions
- Blood diseases such as leukemia
- Bone marrow involvement
The test is often used in conjunction with other blood tests to provide a more complete picture of immune system function.
Elevated levels of monocytes
If monocyte levels are elevated, it is called monocytosis. This may indicate that the body is reacting to an infection, inflammation or other stress. Common causes of high monocyte levels:
- Viral or bacterial infections
- Chronic inflammatory diseases such as rheumatoid arthritis or inflammatory bowel disease (IBD)
- Autoimmune diseases
- Blood disorders, such as leukemia
- Recovery from an acute infection
Low monocyte levels
If monocyte levels are low, it is called monocytopenia and may indicate a decreased production of white blood cells or a weakened immune system. Common causes of low monocyte levels may include:
- Bone marrow disease or injury
- Treatment with corticosteroids
- Infections that affect the immune system, such as HIV
- Chronic stress or nutritional deficiency
The B-Monocyte blood test is usually performed to assess immune system function and detect infections, inflammatory diseases, or blood disorders. Elevated levels may indicate an ongoing infection or inflammation, while low levels may be a sign of a weakened immune system or bone marrow involvement.
Because monocytes are an important part of the body's defense system, they are often analyzed along with other white blood cells to provide a more comprehensive picture of immune health.