LYM in a CBC (Complete Blood Count) refers to lymphocytes, a type of white blood cell that plays a vital role in the immune system. Lymphocytes help your body fight off infections, cancer, and other foreign invaders.
A CBC measures the number of lymphocytes in your blood, expressed as a percentage of your total white blood cell count. It can also be reported as an absolute lymphocyte count, which gives the actual number of lymphocytes per unit of blood.
Factors that can influence lymphocyte count:
- Infections: Both bacterial and viral infections can cause an increase in lymphocytes.
- Immune disorders: Some autoimmune diseases, such as lupus or rheumatoid arthritis, can cause abnormal lymphocyte counts.
- Cancers: Lymphocytic cancers, such as leukemia and lymphoma, can lead to an increase in lymphocyte count.
- Medications: Certain medications, such as corticosteroids, can suppress the immune system and lower lymphocyte count.
Normal lymphocyte count ranges:
- Percentage: 20-40% of white blood cells
- Absolute count: 1,000-4,800 cells per microliter of blood
Interpreting LYM results:
- High lymphocyte count (lymphocytosis): This could indicate an infection, autoimmune disease, or cancer.
- Low lymphocyte count (lymphopenia): This can be caused by infections, immune suppression, or certain cancers.
It's important to note that your doctor will interpret your CBC results in the context of your overall health and other test results. They can help determine the cause of any abnormalities and recommend appropriate treatment if necessary.
