Lymphocyte Subset Analysis (with Flow Cytometry)
This test measures different types of white blood cells called lymphocytes in your blood, which help your immune system fight infections and diseases. It can help doctors understand how your immune system is working or identify problems with specific lymphocyte types.
["This test helps assess immune function and identify potential immune disorders."]
Key facts at a glance
- LOINC
- 32562-1
- Short code
- Lymphs IgG/lymph NFr Spec
- Synonyms
- Lymphs IgG/lymph NFr Spec
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 82784
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why This Test Is Done
Doctors may order this test if you have symptoms like frequent infections, unusual fatigue, or if you’re being treated for a condition that affects your immune system. It can also be used before certain treatments, such as chemotherapy, to check how your immune cells respond.
What to Expect Before the Test
No special preparation is needed. You’ll have a small needle inserted into a vein (usually in your arm), and blood will be drawn into a tube. The process takes about 5 minutes, and you may feel a slight pinch. If you’re nervous, let your doctor or nurse know.
What Happens During the Test
The blood sample is sent to a lab where it’s analyzed using a special machine called a flow cytometer. This machine separates and identifies different types of lymphocytes based on their size, shape, and surface markers. Results are usually ready within 24 hours.
What the Results Mean
The test reports percentages or counts of different lymphocyte types, such as T cells, B cells, and natural killer (NK) cells. Abnormal results may suggest conditions like immune deficiencies, autoimmune diseases, or certain cancers. Your doctor will interpret the results in the context of your health and symptoms.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Abnormal lymphocyte counts can indicate immune system disorders, such as low immunity (e.g., HIV/AIDS), overactive immune responses (e.g., lupus or rheumatoid arthritis), or conditions like leukemia or lymphoma. This test helps guide treatment decisions and monitor immune health over time.
Short name
Lymphocyte Profile
Frequently asked questions
What does a ‘lymphocyte profile’ tell me about my immune system?
How long does it take to get my results?
Can I eat or drink 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