AUTOIMMUNE ENCEPHALITIS PANEL

The Autoimmune Encephalitis Panel is a specialized laboratory test designed to detect antibodies associated with autoimmune encephalitis, a group of neurological disorders in which the body's immune system mistakenly attacks healthy brain tissue. Early diagnosis is essential because autoimmune encephalitis can cause severe neurological and psychiatric symptoms but often responds well to timely treatment.

Autoimmune encephalitis may affect memory, behavior, cognition, speech, movement, and seizure control. Symptoms can develop rapidly and may mimic psychiatric illness, viral encephalitis, epilepsy, dementia, or other neurological conditions. The Autoimmune Encephalitis Panel helps identify specific autoantibodies that target neuronal cell surface proteins, synaptic receptors, or intracellular neuronal antigens.

This panel may include antibodies such as NMDA Receptor (NMDAR), AMPA Receptor, GABA-B Receptor, LGI1, CASPR2, DPPX, GAD65, and other clinically relevant neuronal antibodies, depending on laboratory protocols.

Benefits of the Test

• Helps diagnose autoimmune encephalitis
• Identifies disease-specific neuronal antibodies
• Supports early treatment decisions
• Assists in distinguishing autoimmune disorders from infections
• Helps evaluate unexplained neurological symptoms
• Supports prognosis and long-term management

Why Doctors Recommend This Test

Doctors may recommend the Autoimmune Encephalitis Panel for patients experiencing:

• Unexplained seizures
• Sudden memory loss
• Confusion or altered mental status
• Behavioral or personality changes
• Psychiatric symptoms of unclear origin
• Movement disorders
• Speech disturbances
• Suspected autoimmune neurological disease

The test is frequently used alongside MRI brain imaging, cerebrospinal fluid (CSF) analysis, EEG studies, and neurological examinations.

Preparation Before Test

The test may be performed using:

• Blood (serum) sample
• Cerebrospinal fluid (CSF) sample
• Both serum and CSF for optimal diagnostic accuracy

Preparation may include:

• No fasting is generally required
• Inform your physician about medications and ongoing treatments
• Follow specific collection instructions provided by the laboratory

Sample requirements may vary depending on the panel methodology used.

Normal Reporting Time

The typical reporting time is 7 to 14 working days, depending on the complexity of antibody analysis and laboratory protocols.

Who Should Take This Test?

• Patients with suspected autoimmune encephalitis
• Individuals with unexplained seizures
• Patients with sudden cognitive decline
• Individuals with unexplained psychiatric symptoms
• Patients with neurological symptoms of uncertain cause
• Individuals referred by neurologists or immunologists

The Autoimmune Encephalitis Panel is an important diagnostic tool that helps identify immune-mediated neurological diseases and enables early treatment that may significantly improve outcomes.

Clinical Significance

This panel may help diagnose:

• Anti-NMDA receptor encephalitis
• LGI1 antibody encephalitis
• CASPR2 antibody-associated encephalitis
• GABA receptor encephalitis
• AMPA receptor encephalitis
• Autoimmune limbic encephalitis
• Paraneoplastic autoimmune encephalitis
• Autoimmune seizure disorders

Positive antibody findings may support diagnosis, guide treatment, and identify associated underlying conditions, including certain tumors.