Sodium
Kidney blood
What It Is
Sodium is a key electrolyte that regulates fluid balance, blood pressure, and nerve and muscle function.
Why It Matters
Abnormal sodium levels can cause confusion, seizures, and other serious symptoms.
If Levels Are High
High sodium (hypernatraemia) usually indicates dehydration.
If Levels Are Low
Low sodium (hyponatraemia) can cause confusion, nausea, and in severe cases, seizures.
Preparation
No special preparation required.
How Often to Test
Annually, or more often if on certain medications.
Panels Including This Marker
Important Disclaimer
This information is for educational purposes only and does not constitute medical advice or diagnosis. Results should be interpreted in clinical context by a qualified healthcare professional. If you have severe symptoms or urgent concerns, seek urgent medical help.