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Factor VII Activity (Serum)

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

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

Quick summary

["Factor VII helps control bleeding by aiding blood clotting; low levels may indicate bleeding disorders or liver issues."]

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

Key facts at a glance

LOINC
3200-3
Short code
Fact VII Act/Nor PPP-sRto
Synonyms
Fact VII Act/Nor PPP-sRto
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 of bleeding problems (e.g., excessive bruising, nosebleeds, or bleeding gums) or if you’re undergoing surgery. It can also help diagnose conditions like liver disease or clotting disorders.

What to Expect Before the Test

No special preparation is needed. You may fast before the test, but your doctor will advise. Bring any medications you’re taking, as some can affect results.

How the Test Is Performed

A blood sample is drawn from a vein, usually in your arm. The blood is sent to a lab for analysis to measure Factor VII activity levels.

Possible Results and Interpretation

Results are compared to a standard range. Low Factor VII activity may suggest liver disease, blood clotting disorders, or certain medications. High levels may rarely indicate other conditions, but this is less common.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Low Factor VII activity is critical because it directly impacts blood clotting. Conditions like liver disease (which produces fewer clotting factors) or inherited clotting disorders (e.g., hemophilia) can lead to bleeding risks. Doctors use this test to guide treatment, such as blood transfusions or medication adjustments.

Short name

Factor VII Activity

Frequently asked questions

What Does a Low Factor VII Level Mean?
A low result may indicate liver problems, heavy alcohol use, or certain medications that affect clotting. It could also suggest inherited bleeding disorders.
What Does a High Factor VII Level Mean?
High levels are less common but may be linked to certain blood disorders or inflammatory conditions. Your doctor will review your full medical history to clarify.
Can I Eat or Drink Before the Test?
Typically, fasting is not required, but follow your doctor’s instructions. If you’re on blood-thinning medications, inform your lab staff beforehand.
  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