Skip to content

Factor VII Activity (Prothrombin Complex Concentration)

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

This test measures the activity level of Factor VII, a protein essential for blood clotting. It helps assess bleeding risks or clotting disorders.

Quick summary

["Factor VII activity helps diagnose bleeding or clotting issues linked to liver disease or blood disorders."]

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

Key facts at a glance

LOINC
3209-4
Short code
Fact VIII Act/Nor PPP
Synonyms
Fact VIII Act/Nor PPP
Category
chemistry
Sample
plasma
Container
Lavender-top (EDTA) or Green-top (Heparin)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
coag
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 doctor may order this test if you have symptoms like excessive bleeding (e.g., bruising, nosebleeds, or heavy menstrual periods), unexplained bruises, or if you have conditions like liver disease, blood clotting disorders, or after trauma/surgery. It may also be checked before certain procedures to ensure safe clotting function.

What Does a Result Mean?

Results are not provided with specific numeric ranges here. Your doctor will interpret the result in relation to your symptoms, medical history, and other tests. Low levels may indicate bleeding disorders or liver problems, while very high levels are rare and usually not clinically significant.

How Is the Test Performed?

A blood sample is taken from a vein, usually in your arm. The blood is processed to measure Factor VII activity using an immunoassay method, which detects its ability to promote blood clotting.

What Should You Do Before the Test?

Avoid taking medications that affect blood clotting (e.g., aspirin, warfarin) unless instructed by your doctor. Fast for 8–12 hours before the test if required by your lab protocol.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Factor VII Activity

Frequently asked questions

What causes low Factor VII activity?
Low Factor VII activity can result from liver disease (e.g., cirrhosis), vitamin K deficiency, certain medications (e.g., anticoagulants), or inherited clotting disorders. Your doctor may also investigate underlying causes like autoimmune conditions or blood loss.
How is Factor VII activity treated?
Treatment depends on the cause. For liver disease, managing symptoms and avoiding bleeding triggers is key. Vitamin K supplements may be prescribed if deficiency is suspected. In severe cases, clotting factor concentrates (e.g., Factor VIIa) might be used for urgent bleeding. Always follow your doctor’s recommendations.
Can lifestyle changes affect Factor VII levels?
While lifestyle factors like diet or exercise generally don’t directly alter Factor VII levels, they can indirectly impact liver health (e.g., avoiding alcohol, maintaining a balanced diet). If you have liver disease, your doctor may advise specific dietary adjustments to support overall health.
  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