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Fibrinogen, Plasma (Mass Concentration) – Quantitative

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

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

Quick summary

["Fibrinogen helps your blood clot properly and supports wound healing."]

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

Key facts at a glance

LOINC
33083-7
Short code
GA from BPD.Rempen91
Synonyms
GA from BPD.Rempen91
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-rempen
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 Might You Need This Test?

Your doctor may order this test to check for bleeding disorders, clotting issues, or to monitor conditions like liver disease, where fibrinogen production can be affected. It may also be used before surgeries or procedures that require careful blood clotting management.

What Does a Low or High Level Mean?

Low levels might suggest bleeding problems or liver disease, while high levels could indicate inflammation, pregnancy, or certain blood disorders. However, individual results depend on your overall health and medical history.

How Is the Test Done?

A small blood sample is drawn from a vein, usually in your arm. The sample is sent to a lab where it is analyzed to measure fibrinogen concentration.

What Can Affect Your Results?

Factors like recent blood loss, certain medications (e.g., anticoagulants), or medical conditions (e.g., infections, kidney disease) can influence fibrinogen levels. Always inform your healthcare provider about all medications or supplements you take.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Fibrinogen Level

Frequently asked questions

What are the typical reference ranges for this test?
Reference ranges can vary by lab and individual health. Your doctor will interpret your results in the context of your overall health and medical needs. Low or high levels may prompt further testing or adjustments to treatment.
How long does it take to get my results?
Results are typically available within 24 to 48 hours, depending on your lab’s processing time. Your doctor will contact you once results are ready, especially if they require follow-up action.
Can I eat or drink before this test?
You can usually eat and drink normally before this test unless your doctor has specific instructions. Avoiding food for certain tests (like fasting) is not required for fibrinogen testing.
  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