Fibrinogen

CoagulationAlso known as: Fibrinogen activity,Also known as: Factor Ig/L

Measures the concentration of fibrinogen, a blood protein essential for clotting.

Normal Range
2 – 4 g/L
g/L
Abnormal Levels
Consult your provider
Specimen Type
Blood

Why This Biomarker Matters

Fibrinogen levels assess bleeding and clotting risk. Abnormal values indicate bleeding disorders, liver dysfunction, or increased cardiovascular risk from excessive clotting.

Understanding Your Results

Normal Range

2 – 4 g/L

Overview

Fibrinogen is a protein produced by the liver that plays a critical role in blood clotting. When you bleed, fibrinogen is converted into fibrin, which forms the mesh that stops bleeding. A fibrinogen test measures the amount of this clotting protein in your blood. Abnormally low levels may indicate bleeding disorders or liver disease, while elevated levels can increase clot formation risk and are associated with cardiovascular disease, stroke, and inflammation.

Technical Information (LOINC Codes)

Standardized laboratory codes for this biomarker

97016-0Primary
Fibrinogen [Mass/volume] in Blood by calculation
mg/dL
3255-7
Fibrinogen [Mass/volume] in Platelet poor plasma by Coagulation assay
mg/dL
30902-1
Fibrinogen [Mass/volume] in Platelet poor plasma by Heat denaturation
g/L
48664-7
Fibrinogen [Mass/volume] in Platelet poor plasma by Coagulation.derived
g/L
16859-1
Fibrinogen [Presence] in Platelet poor plasma
21002-1
Fibrinogen [Interpretation] in Platelet poor plasma

Available Lab Tests

Order tests that measure this biomarker

Advanced Cardiovascular Health Comprehensive

$526.57

Advanced Heart Health Comprehensive

$489.94

Fibrinogen Activity Test

$23.71
Results in Same day to 1 business day