Lymphocytes %
Track Lymphocytes percentage for adaptive immunity and infection response monitoring. Understand immune system balance patterns.
What is Lymphocytes %?
Lymphocytes % measures the percentage of lymphocytes among your total white blood cells. Lymphocytes include T cells, B cells, and natural killer cells that form the adaptive immune system. They recognize specific threats, create antibodies, and provide long-term immunity against viruses, bacteria, and other pathogens.
Why is it Tested?
Doctors order lymphocytes % as part of a complete blood count with differential to evaluate immune system function, diagnose infections, monitor autoimmune diseases, and screen for blood cancers. It’s particularly useful for distinguishing viral from bacterial infections and assessing immune response.
Normal Ranges
Reference ranges vary by lab, but general adult guidelines:
- Adults: 20–40%
Normal lymphocyte percentages represent a significant portion of circulating white blood cells, typically 20-40% in healthy adults.
Reference ranges vary by authority. Track yours across multiple standards with automatic unit conversions in LabsVault.
What do Abnormal Results Mean?
Abnormal results are not a diagnosis. Always discuss your results with a qualified healthcare provider before making any medical decisions.
Low Lymphocytes %
Low lymphocyte percentages (relative lymphopenia) may indicate:
- Acute bacterial infections (neutrophils increase)
- Severe stress or illness
- Corticosteroid medications
- Autoimmune diseases
- Immunodeficiency disorders
- Chemotherapy or radiation therapy
High Lymphocytes %
Elevated lymphocyte percentages (relative lymphocytosis) commonly indicate:
- Viral infections (common cold, flu, mononucleosis)
- Chronic infections (tuberculosis)
- Autoimmune diseases
- Chronic lymphocytic leukemia
- Stress or recovery from illness
- Smoking
How to Track Over Time
Tracking lymphocyte percentage trends helps distinguish between acute infections and chronic conditions. Persistent elevation may warrant investigation for underlying immune disorders or blood cancers, while declining percentages during illness recovery typically indicate resolution of viral infections.
Track your Lymphocytes % results over time
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