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SMAD4 Gene Mutation Analysis (Blood)

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

This test checks for genetic changes in the SMAD4 gene, which may be linked to certain inherited conditions affecting digestion, growth, or cancer risk.

Quick summary

["A mutation in the SMAD4 gene could indicate a higher risk for hereditary conditions or cancer."]

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

Key facts at a glance

LOINC
100027-2
Short code
SMAD4 gene Mut Anl Bld/T
Synonyms
SMAD4 gene Mut Anl Bld/T
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
molgen
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have a family history of conditions like juvenile polyposis, Peutz-Jeghers syndrome, or certain cancers (e.g., gastrointestinal or pancreatic). It may also be used for genetic counseling or risk assessment in certain inherited syndromes.

What to Expect Before the Test

No special preparation is needed. A simple blood sample will be taken from a vein in your arm. This is a standard procedure and typically causes only mild discomfort.

How the Results Are Used

Results help determine if you carry a mutation in the SMAD4 gene, which can guide treatment plans, monitoring, or preventive measures for related health risks.

Common Conditions Linked to SMAD4 Mutations

Mutations in SMAD4 are associated with inherited syndromes that may affect digestion, growth, or increase cancer risk. These include conditions like juvenile polyposis syndrome or Peutz-Jeghers syndrome.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

SMAD4 mutations can increase the risk of developing certain cancers, including gastrointestinal cancers (e.g., colon, stomach) and pancreatic cancer. Early detection and monitoring are important for managing these risks.

Short name

SMAD4 Mutation Test

Frequently asked questions

What does a positive result mean?
A positive result means you have a mutation in the SMAD4 gene. This may require further genetic counseling and may influence decisions about monitoring, preventive care, or family testing.
Will this test affect my treatment options?
Your treatment options depend on your overall health, symptoms, and genetic results. Discuss any findings with your healthcare provider to understand how this test may impact your care plan.
How long will it take to get my results?
Results are typically available within 2 to 4 weeks. Your healthcare provider will discuss the findings with you once they are ready.
  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