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Genetic Mutation Analysis for KRAS (Blood)

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

This test checks for specific changes (mutations) in the KRAS gene, which may be linked to certain cancers or other health conditions.

Quick summary

["KRAS mutations can influence cancer risk and treatment options."]

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

Key facts at a glance

LOINC
41753-5
Short code
FKRP gene Mut Anl Bld/T
Synonyms
FKRP 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

What Does This Test Measure?

The KRAS gene is involved in cell growth and division. Mutations in this gene can cause abnormal cell growth, sometimes leading to cancer. This test detects whether these mutations are present in your blood.

Why Might You Need This Test?

Doctors may order this test if you have a history of certain cancers (like colorectal, pancreatic, or lung cancer), symptoms that suggest a genetic risk, or if you’re being considered for targeted cancer treatments that could be affected by KRAS status.

How Is the Sample Collected?

A small amount of blood is drawn from your arm, similar to a regular blood test. The blood sample is then sent to a lab for genetic analysis.

What Are the Possible Results?

Results may show whether KRAS mutations are present or not. If mutations are found, they can help guide treatment decisions or further testing.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

KRAS Mutation Test

Frequently asked questions

What does a positive or negative result mean?
A positive result means KRAS mutations were detected in your blood sample. This could indicate a higher risk for certain cancers or influence treatment planning. A negative result means no mutations were found in this test, but further evaluation may still be needed depending on your medical history.
Can this test detect all types of KRAS mutations?
This test focuses on common KRAS mutations linked to cancer. Some rare mutations may not be detected by this test. Additional genetic testing may be recommended if needed.
How long does it take to get results?
Results are typically available within 1 to 2 weeks, depending on lab processing times and any additional confirmatory testing required.
  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