Glutamate Receptor 1 (mGluR1) Antibody, Serum/Plasma (Screening)
This test checks for antibodies against glutamate receptor 1, a protein involved in brain signaling. These antibodies may be linked to certain autoimmune neurological conditions.
["Screening for rare neurological antibodies that could affect brain function."]
Key facts at a glance
- LOINC
- 93498-4
- Short code
- mGluR1 IgG Ser Ql CBA IFA
- Synonyms
- mGluR1 IgG Ser Ql CBA IFA
- Category
- coagulation
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- cba-ifa
- CPT
- 82784
- 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 This Test Might Be Ordered
Your doctor may recommend this test if you have symptoms like unexplained muscle weakness, seizures, or other neurological issues that don’t have a clear cause. It’s sometimes used in patients with autoimmune diseases affecting the nervous system or those with unexplained movement disorders.
What to Expect Before the Test
No special preparation is needed. You’ll have a small needle inserted into your arm or vein to draw blood. If a blood draw is uncomfortable, let your healthcare provider know so they can help.
What the Test Results Mean
If the test is positive, it means your body detected antibodies against glutamate receptor 1. This could indicate an autoimmune response, but further testing may be needed to confirm a specific condition. A positive result doesn’t always mean you have a disease—it may just signal a need for more investigation.
Possible Conditions Linked to Positive Results
Positive results may be associated with autoimmune neurological disorders, such as anti-NMDA receptor encephalitis or other rare conditions affecting brain signaling. Your doctor will discuss next steps, which may include additional tests or monitoring.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This screening test helps identify potential autoimmune responses in the nervous system. While not all positive results indicate a disease, they prompt further evaluation to rule out conditions like epilepsy, movement disorders, or psychiatric symptoms linked to brain antibodies. Early detection can guide treatment decisions.
Short name
mGluR1 Antibody Screen
Frequently asked questions
What does a positive result mean?
The frequency depends on your symptoms and medical history. If you have a known autoimmune neurological condition, your doctor may recommend periodic monitoring. If this is a one-time screening, follow-up may not be needed unless new symptoms arise.
No, you can usually leave immediately after the blood draw. If you experience any unusual reactions (like dizziness or pain), contact your healthcare provider right away.
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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