Fibrinogen by Turbidimetric Method (Serum)
This test measures the amount of fibrinogen in your blood, a protein crucial for blood clotting. Fibrinogen helps your blood form clots when you’re injured, preventing excessive bleeding.
["Fibrinogen supports healthy blood clotting and helps prevent bleeding disorders."]
Key facts at a glance
- LOINC
- 110888-5
- Short code
- Fibrinogen Msmt PPP
- Synonyms
- Fibrinogen Msmt PPP
- Category
- coagulation
- Sample
- plasma
- Container
- Lavender-top (EDTA) or Green-top (Heparin)
- Units
- N/A
- Ref low
- 200
- Ref high
- 400
- Critical range
- 60 N/A – —
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 85384
- SNOMED
- 47279000
- 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 healthcare provider may order a fibrinogen test to check for conditions affecting blood clotting, such as bleeding disorders, liver disease, or DIC (disseminated intravascular coagulation). It may also be used to monitor treatment for these conditions or to assess risk in people with certain medical histories.
What to Expect Before the Test
No special preparation is usually needed. You may be asked to fast for 8–12 hours before the test if it’s part of a broader blood panel. On the day of the test, avoid smoking and limit caffeine. Bring any medications you’re taking to discuss with your provider.
What Happens During the Test?
A healthcare professional will draw blood from a vein in your arm using a small needle. You may feel a brief pinch, but the procedure is quick. The blood sample is then sent to a lab for analysis using a turbidimetric method, which detects fibrinogen levels through light scattering.
What the Results Mean
Fibrinogen levels can vary based on health, age, and medications. Low levels may indicate bleeding disorders, liver disease, or certain infections. High levels might suggest inflammation, pregnancy, or other conditions. Your provider will interpret results in the context of your overall health.
Reference range
Adult: 200-400 mg/dLN/A
Inform your healthcare provider if you are taking blood thinners. No special preparation required.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance: Fibrinogen plays a key role in blood clotting. Low fibrinogen can lead to excessive bleeding, while high levels may contribute to clotting risks. Monitoring this test helps diagnose or manage bleeding disorders, liver disease, or inflammatory conditions. It’s also used in research or clinical trials to assess coagulation pathways.
Short name
Fibrinogen
Frequently asked questions
What causes low fibrinogen levels?
What are common symptoms if fibrinogen is low?
Can lifestyle changes affect fibrinogen 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 17, 2026. · Read our editorial policy