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Fibrinogen (Serum or Plasma) Concentration

Published: August 9, 2026Updated: August 16, 2026

This test measures the amount of fibrinogen in your blood, a protein essential for blood clotting.

Quick summary

["Fibrinogen helps prevent excessive bleeding and supports wound healing."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
33084-5
Short code
GA from BPD.Shinozuka96
Synonyms
GA from BPD.Shinozuka96
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
us-estimated-from-bpd-shinozuka
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 Might Be Ordered

Your healthcare provider may order this test to evaluate blood clotting function, assess liver health (since the liver produces fibrinogen), or check for conditions like liver disease, bleeding disorders, or DIC (disseminated intravascular coagulation). It may also be used during pregnancy to monitor clotting risks or after surgery to ensure proper healing.

What to Expect Before the Test

No special preparation is usually needed. You may have a small needle inserted into a vein in your arm to draw blood. If you’re on blood-thinning medications, inform your provider before testing.

What the Results Mean

Results are typically reported as a concentration value (e.g., grams per liter). Low levels may indicate liver disease, clotting disorders, or severe infections. High levels could suggest inflammation, pregnancy, or certain blood disorders.

Common Conditions Monitored

Fibrinogen is monitored in conditions like liver cirrhosis, bleeding disorders (e.g., hemophilia), or during pregnancy to manage clotting risks. It may also be checked after trauma or surgery to track healing progress.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Fibrinogen’s Role in Health

Short name

Fibrinogen

Frequently asked questions

What causes low fibrinogen levels?
Low fibrinogen can result from liver disease (where production is impaired), severe infections, DIC (a life-threatening clotting disorder), or certain medications. It may also be present in conditions like acute pancreatitis or severe burns.
What causes high fibrinogen levels?
High fibrinogen is often seen in inflammatory conditions (e.g., rheumatoid arthritis), pregnancy, or after surgery. Rarely, it may indicate blood clots or certain cancers.
How often should I get this test?
Frequency depends on your condition. If you have a chronic liver disease or bleeding disorder, your provider may order it regularly. Pregnant women or those recovering from surgery may need it less often unless symptoms arise.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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