Flow Cytometry Study
This test uses a specialized machine to analyze cells in your blood or other body fluids by measuring their size, shape, and other characteristics. It helps detect abnormalities in cell populations, such as those seen in cancers, immune disorders, or blood disorders.
["Flow cytometry can help diagnose and monitor conditions by identifying unusual cell types in your blood or body fluids."]
Key facts at a glance
- LOINC
- 33719-6
- Short code
- FLOWCYTOMETRYSTUDY
- Synonyms
- —
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- flow-cytometry
- 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
What Does Flow Cytometry Measure?
Flow cytometry examines cells as they pass through a laser beam. The machine measures how cells scatter light and emit fluorescence, which helps identify different cell types and their characteristics. This includes checking for cell size, shape, internal structures, and surface markers that can indicate health or disease.
Common Uses of Flow Cytometry
This test is often used to diagnose blood cancers like leukemia or lymphoma, monitor immune responses, check for immune system disorders, and evaluate blood disorders such as anemia or thrombocytopenia. It may also be used in research or specialized clinical settings for rare conditions.
Sample Types and Preparation
Flow cytometry typically requires a small sample of blood (whole blood or plasma/serum) or other body fluids like cerebrospinal fluid. Your healthcare provider will take the sample in a sterile tube and send it to the lab, where it is prepared for analysis by the machine.
How the Test Works
The prepared sample is injected into the flow cytometer, a device that streams cells through a narrow tube. A laser or other light source illuminates the cells, and detectors measure how the cells scatter light and fluoresce. Different cell types and abnormalities produce unique patterns, which are recorded and analyzed.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Flow Cytometry
Frequently asked questions
Why might my doctor order a flow cytometry study?
How long does it take to get results?
Is there any preparation needed before the 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