Understanding Lab Tests for Seizures
Written by Private MD Labs Medical Writing Team • Last Updated: September 8, 2025
Seizures are episodes of abnormal electrical activity in the brain that are typically diagnosed through clinical observation, medical history, and neurological examination. While there is no single blood test to diagnose seizures themselves, laboratory testing plays a fundamental role in identifying potential underlying causes and metabolic factors that may trigger seizure activity.
Recommended Test
Vitamin B6
This test measures vitamin B6 levels in the blood. Severe vitamin B6 deficiency, particularly in newborns and infants, can cause seizures by disrupting the normal function of neurotransmitters in the brain. Identifying and correcting this deficiency is crucial for preventing seizure episodes and supporting proper neurological function.
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Why Blood Testing is Important for Seizure Evaluation
Blood tests are essential for investigating the root causes of seizures, particularly when they occur without an obvious trigger. Nutritional deficiencies, metabolic imbalances, and other systemic conditions can contribute to seizure activity. Testing helps healthcare providers identify and address these treatable underlying factors.
Understanding Seizure-Related Testing
Vitamin B6 deficiency is a well-recognized but treatable cause of seizures, especially in young children. This vitamin is essential for the production of neurotransmitters like GABA, which help regulate brain activity. When levels are insufficient, the brain's electrical activity can become unstable, leading to seizures that may be difficult to control with standard anti-seizure medications until the deficiency is corrected.
Important Considerations
The information here is for educational purposes only and is not a substitute for professional medical advice. Always consult with a healthcare provider for diagnosis and treatment.
