Serum Fibronectin Concentration (Mass Concentration)
This test measures the amount of fibronectin, a protein produced by the liver that helps blood clot and supports tissue repair. It may be checked to assess liver function, kidney health, or wound healing.
["Fibronectin helps your body heal and controls blood clotting—low levels may signal organ damage or poor healing."]
Key facts at a glance
- LOINC
- 16867-4
- Short code
- Fibronectin Aggr IgG Ser-mCnc
- Synonyms
- Fibronectin Aggr IgG Ser-mCnc
- 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 Is This Test Done?
Your doctor may order this test if you have symptoms like easy bruising, slow wound healing, or signs of liver or kidney problems. It can also help monitor conditions like cirrhosis, kidney disease, or certain infections.
What Does a Low or High Level Mean?
Low levels of fibronectin might indicate liver disease, kidney failure, or severe infections. Very high levels could rarely suggest inflammation or certain blood disorders, but this is less common.
How Is the Sample Collected?
A blood sample is drawn from a vein, usually in your arm. The blood is then sent to a lab to measure fibronectin levels.
What Should You Expect Before the Test?
No special preparation is needed, but avoid eating or drinking anything for 8–12 hours before the test if instructed. Wear comfortable clothing and let your doctor know about any medications or health conditions.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Fibronectin
Frequently asked questions
Fibronectin is a key protein in blood clotting and tissue repair. Low levels can signal liver dysfunction, kidney damage, or poor wound healing, while abnormal spikes may rarely indicate inflammation or rare blood disorders. Your doctor will interpret results in the context of your overall health.
Results are typically available within 1–3 business days, depending on your lab’s processing time.
Doctors may order fibronectin testing to evaluate liver function, kidney health, or wound healing in patients with symptoms like bruising, slow-healing wounds, or signs of systemic inflammation.
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