Skip to content

OPA1 Gene Mutation Carrier Status (Blood)

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

This test checks whether you carry a mutation in the OPA1 gene, which may be linked to certain inherited conditions affecting vision or muscle function.

Quick summary

["Knowing your OPA1 mutation status can help guide genetic counseling and family planning."]

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

Key facts at a glance

LOINC
48601-9
Short code
OPA1 gene Mut Anl Bld/T
Synonyms
OPA1 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 autosomal dominant optic neuropathy (ADON), Charcot–Marie–Tooth disease, or other neuromuscular disorders linked to OPA1 mutations. It may also be part of genetic screening for those with unexplained symptoms.

What to Expect Before the Test

No special preparation is needed. A blood sample will be taken from a vein in your arm, similar to other blood tests. You may feel slight discomfort, but it usually lasts only a few minutes.

How the Test Works

The test analyzes your blood for the presence of the OPA1 gene mutation using genetic sequencing. This helps determine if you carry the mutation without necessarily having symptoms.

What the Results Mean

Results will be reported as either ‘positive’ (you carry the mutation) or ‘negative’ (you do not). If positive, further genetic counseling may be recommended to discuss risks for family members.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

OPA1 Mutation Carrier Test

Frequently asked questions

OPA1 mutations can cause inherited disorders affecting vision (e.g., ADON) or muscle function (e.g., neuropathy). Knowing your status helps identify risks for you and your family, allowing for proactive management or monitoring.
This test is not diagnostic for symptoms like vision loss or muscle weakness—it only checks for the genetic mutation. Symptoms would require additional evaluation by a specialist.
What if I have symptoms like vision problems or muscle weakness?
If you experience symptoms, consult your doctor. These may not be directly linked to the OPA1 mutation, but genetic testing can help clarify risks. Additional tests (e.g., eye exams, nerve function tests) may be needed.
How often should I get this test?
This test is typically done once as part of genetic screening or if you’re at risk due to family history. Results don’t change over time unless you have further genetic testing for other conditions.
  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