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Plasma Fibrinogen Concentration (Quantitative)

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

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

Quick summary

Fibrinogen helps your blood clot properly when injured.

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

Key facts at a glance

LOINC
96707-5
Short code
Clot stiff TF ind+IIb-IIIa inh p hep neu
Synonyms
Clot stiff TF ind+IIb-IIIa inh p hep neu
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
us-fibrinogen-contribution-tissue-factor-induced-and-platelet-glycoprotein-iib-iiia-receptor-inhibited-post-heparin-neutralization
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why This Test Is Done

Doctors may order this test to check for bleeding disorders, liver disease, or other conditions that affect blood clotting. It can also help monitor treatment for conditions like hemophilia or evaluate response to medications that thin blood.

What to Expect Before the Test

No special preparation is needed. You may have a small needle inserted into your arm to draw blood. If you’re on blood thinners, let your doctor know before the test.

What the Results Mean

Results are compared to a general reference range, but exact values can vary by lab. Low levels may suggest bleeding disorders or liver problems, while very high levels might indicate inflammation or pregnancy.

Common Conditions Linked to Fibrinogen Levels

Abnormal levels can be linked to conditions like liver disease, infections, or clotting disorders. Your doctor will discuss results in the context of your overall health.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Fibrinogen plays a critical role in blood clotting and wound healing. Low levels can increase bleeding risk, while high levels may signal inflammation or other underlying issues. Results help guide treatment decisions.

Short name

Fibrinogen

Frequently asked questions

What causes low fibrinogen levels?
Low fibrinogen can result from liver disease, severe infections, blood loss, or certain medications. It may also be inherited in some cases.
What causes high fibrinogen levels?
High fibrinogen is often linked to inflammation, pregnancy, or certain cancers. It can also be a normal response to stress or injury.
How often should I get this test?
Your doctor will determine frequency based on your health needs, such as monitoring bleeding risks or managing chronic conditions.
  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