How Do Doctors Test for Lymphocyte Levels?
Published: Aug 12, 2024
Testing for lymphocyte levels can reveal a lot about your immune system. Let's explore how these tests work and what they can tell you.
Contents
The Basics of Blood Tests
Blood tests are the first step when checking lymphocyte levels. A complete blood count (CBC) is often done to measure the number of different cells in your blood, including lymphocytes. This test can help identify if you have lymphocytosis or lymphocytopenia.
Specialized Testing: Flow Cytometry
Flow cytometry is a more advanced test that helps determine if lymphocytosis is due to a reactive or malignant process. It analyzes the characteristics of blood cells, such as size and protein markers, to identify the type and cause of the lymphocyte increase.

When Are These Tests Needed?
These tests are necessary when there are symptoms of serious health conditions or unexplained changes in lymphocyte levels. They help doctors diagnose the issue accurately and decide on the best treatment plan.
Frequently Asked Questions
It's a blood test that measures different types of cells, including lymphocytes.
It helps determine if lymphocytosis is reactive or malignant.
When there are symptoms or unexplained changes in lymphocyte levels.
Yes, they can change due to infections, stress, or underlying conditions.
The Bottom Line
Testing lymphocyte levels is crucial for diagnosing potential health issues.
References
- Sevilla DW, Colovai AI, Emmons FN, et al. Hematogones: a review and update. Leuk Lymphoma 2010; 51:10.
This article has been reviewed for accuracy by one of the licensed medical doctors working for Doctronic. Always discuss health information with your healthcare provider.
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