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Fibrinolysis Inhibitor, Whole Blood

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

A blood test that evaluates factors limiting clot breakdown and helps assess the balance between clot formation and fibrinolysis.

Quick summary

["This test helps evaluate how effectively the blood's clot-dissolving system is regulated."]

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

Key facts at a glance

LOINC
52764-8
Short code
Fibrinolysis inhib TEG Pnl Bld
Synonyms
Fibrinolysis inhib TEG Pnl Bld
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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

What is this test?

Fibrinolysis is the process that dissolves blood clots after they form. This test measures a fibrinolysis inhibitor in whole blood or evaluates related inhibitory activity in the laboratory.

Why might I need this test?

It may be ordered when excessive or inadequate clot breakdown is suspected, particularly in people with unexplained bleeding, blood clots, or a personal or family history of clotting disorders.

How is the test performed?

A blood sample is collected in a tube without anticoagulant when whole blood is required. The laboratory then measures fibrinolysis-inhibiting activity using a standardized laboratory method.

How do I prepare for the test?

No special preparation is usually needed. Follow the laboratory's collection instructions, and tell the healthcare professional if you are taking blood thinners, fibrinolytic medicines, or medicines that affect clotting.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Abnormal results may indicate an imbalance between clot formation and clot breakdown. Reduced inhibitory activity can be associated with excessive fibrinolysis and bleeding, while increased activity may occur when fibrinolysis is suppressed, such as with certain medicines or clotting disorders. Results must be interpreted with the clinical picture and other coagulation tests.

Short name

Fibrinolysis Inhibitor

Frequently asked questions

Does this test diagnose a specific bleeding or clotting disorder?
No. It is one part of evaluating the blood's clotting and clot-dissolving systems and is usually interpreted alongside other tests and medical history.
Why might the laboratory use a whole-blood sample?
Whole blood can reflect both circulating blood cells and plasma factors. The laboratory processes the sample using the collection method required for the test.
Can medicines affect the result?
Yes. Blood thinners, clot-dissolving medicines, and some other medicines may affect fibrinolysis or clot function, so medication use should be reported.
  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