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Genetic mutation analysis (qualitative) for GNAQ gene in plasma

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

This test checks for specific changes (mutations) in the GNAQ gene, which may be linked to certain types of tumors or other genetic conditions. It’s often used in research or specialized diagnostic settings.

Quick summary

["This test helps identify rare genetic variations that could influence health risks or treatment planning."]

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

Key facts at a glance

LOINC
100021-5
Short code
GNAQ gene Mut Anl Bld/T
Synonyms
GNAQ 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 symptoms or a history suggestive of a tumor type where GNAQ mutations are known to occur, such as certain types of hemangioendothelioma or other rare cancers. It may also be used in research studies or for genetic counseling.

How the Test Works

The test analyzes a small sample of your plasma (liquid part of blood) using advanced genetic sequencing. It detects whether the GNAQ gene has unusual changes (mutations) that aren’t present in healthy individuals.

Sample Collection and Preparation

A blood draw is needed to collect plasma. The sample is processed and sent to a lab for genetic analysis. Results are typically reported as either ‘positive’ (mutation detected) or ‘negative’ (no mutation found).

What the Results Mean

A positive result indicates the presence of a GNAQ mutation, which may guide further testing or treatment options. A negative result means no detectable mutation in this sample. Results are interpreted by a healthcare provider in the context of your medical history.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

GNAQ Gene Mutation Test (Plasma)

Frequently asked questions

What does a positive result mean?
A positive result suggests a genetic alteration in the GNAQ gene that may be associated with specific tumor types or conditions. This finding could influence decisions about further diagnostic tests, treatment approaches, or participation in clinical trials.
How might this test affect my treatment?
While GNAQ mutations are rare in common cancers, they may play a role in certain rare tumors. Your healthcare team will discuss how these results might impact your care, including whether targeted therapies or additional testing are needed.
Can this test be done at home?
No, this test requires a blood sample collected by a healthcare professional. Genetic testing often involves specialized labs and may not be available through over-the-counter kits.
  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