Granulocyte Colony-Stimulating Factor (CSF) Level, Quantitative
This test measures the amount of granulocyte colony-stimulating factor (CSF) in your blood. CSF is a protein that helps stimulate the production of white blood cells, particularly neutrophils, which play a key role in fighting infections.
["CSF supports immune response and helps diagnose or monitor conditions affecting white blood cell production."]
Key facts at a glance
- LOINC
- 40738-7
- Short code
- MuV IgM CSF Ql IA
- Synonyms
- MuV IgM CSF Ql IA
- Category
- chemistry
- Sample
- csf
- Container
- Sterile tube
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- ia
- CPT
- 82784
- Specimen volume
- 1-2 mL
- Stability
- Immediate analysis required, Refrigerated: 1h
- Hemolysis max
- 200
- TAT
- 4–24 hours
- Order
- routine
Why This Test Might Be Ordered
Your healthcare provider may order this test if you have symptoms of low white blood cell counts (neutropenia), such as frequent infections, fatigue, or easy bruising. It may also be used to monitor treatment responses in conditions like chemotherapy-induced neutropenia or certain cancers.
What to Expect Before the Test
No special preparation is typically needed. You may have a blood draw from a vein in your arm, similar to other blood tests. If you’re on blood thinners or have a history of bleeding disorders, let your provider know.
What the Results Mean
Results can help determine if your body is producing enough white blood cells or if an underlying condition (like a bone marrow disorder or infection) is affecting production. Abnormal levels may guide treatment decisions.
Common Conditions Monitored
This test is often used to assess neutropenia, evaluate bone marrow function, or monitor responses to treatments like chemotherapy or stem cell therapy.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Elevated CSF levels may indicate overactive immune responses or certain cancers, while low levels often signal suppressed bone marrow function or infections. Providers use these results to tailor treatments for conditions like leukemia, aplastic anemia, or post-transplant monitoring.
Short name
CSF (Granulocyte Colony-Stimulating Factor) Level
Frequently asked questions
What causes abnormal CSF levels?
How long does it take to get results?
Can lifestyle changes affect CSF levels?
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