Lymphocyte Subset Analysis by Flow Cytometry (Manual Count)
This test measures the number of different types of white blood cells called lymphocytes in your blood, which helps assess immune function and identify potential immune disorders.
["This test helps doctors understand your immune system’s balance and spot problems like infections, immune deficiencies, or blood disorders."]
Key facts at a glance
- LOINC
- 11275-5
- Short code
- Lg Gran Lymphs NFr Bld Manual
- Synonyms
- Lg Gran Lymphs NFr Bld Manual
- Category
- chemistry
- Sample
- whole-blood
- Container
- Lavender-top (EDTA)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- manual-count
- Specimen volume
- 3 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
What Does This Test Measure?
Your blood sample is analyzed to count specific lymphocyte subsets, including T-cells, B-cells, and natural killer (NK) cells. This manual method provides detailed counts of these immune cells, which can be used to evaluate immune health and diagnose conditions like lymphoma or autoimmune diseases.
Why Might You Need This Test?
Doctors may order this test if you have symptoms like frequent infections, unexplained fatigue, or if you’re undergoing treatment for a blood-related condition. It helps track immune responses before or after treatments like chemotherapy or immunotherapy.
How Is the Test Performed?
A small blood sample is drawn from your arm. The sample is then processed manually to count and classify different lymphocyte types, ensuring precise measurements of immune cell populations.
What Are the Possible Results?
Results show the absolute counts of each lymphocyte subset, helping identify imbalances or abnormalities in immune cell numbers that may require further medical evaluation.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This test is clinically significant for diagnosing and monitoring conditions affecting the immune system, such as leukemia, lymphoma, or immune deficiencies. It also aids in assessing the effectiveness of treatments that target immune cells.
Short name
Manual Lymphocyte Count
Frequently asked questions
How long will I need to wait for my results?
What should I do if my results are abnormal?
Can I eat or drink anything before this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy