Granulocyte Colony-Stimulating Factor (G-CSF) Concentration in Serum or Plasma
This test measures the amount of a protein called granulocyte colony-stimulating factor (G-CSF) in your blood. G-CSF helps stimulate the production of white blood cells, which are important for fighting infections.
["G-CSF helps your body produce more white blood cells to support your immune system."]
Key facts at a glance
- LOINC
- 34628-8
- Short code
- MTX CSF-sCnc
- Synonyms
- MTX CSF-sCnc
- Category
- chemistry
- Sample
- csf
- Container
- Sterile tube
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- 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 a condition that affects your bone marrow, such as chemotherapy, radiation therapy, or certain blood disorders. It may also be done to monitor treatment responses or side effects, especially if you’re receiving medications that affect white blood cell production.
What to Expect Before the Test
No special preparation is needed for this test. You may have a simple blood draw, where a small needle is used to collect a sample of blood from a vein in your arm. If you’re taking medications that could affect white blood cells, let your healthcare provider know.
What the Test Results Mean
Results can vary depending on your health status and medical history. Low levels might indicate problems with white blood cell production, while higher levels could be seen in certain infections, cancers, or after certain treatments. Your healthcare provider will interpret the results in the context of your overall health.
Common Conditions Monitored
This test is often used to monitor patients undergoing treatments like chemotherapy, bone marrow transplants, or those with conditions like aplastic anemia or certain cancers. It helps track how well your body is responding to treatments that might lower white blood cell counts.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
G-CSF plays a critical role in the production and function of neutrophils, a type of white blood cell that helps fight infections. Abnormal levels can signal underlying health issues, such as infections, bone marrow disorders, or side effects from certain medications. Regular monitoring can help prevent complications and guide treatment decisions.
Short name
G-CSF Level
Frequently asked questions
What does a low G-CSF level mean?
What causes G-CSF levels to be higher?
Is there anything I can do to prepare for 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