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Sodium

Sodium

£11.88
This add-on measures the level of sodium in your blood, an essential electrolyte for fluid balance, nerve signals, and muscle function. Abnormal levels may cause fatigue, confusion, or weakness—even without clear symptoms.
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About this test

  • Fatigue or low energy
  • Muscle weakness or cramps
  • Headaches or confusion
  • Nausea or vomiting
  • Restlessness or irritability
  • Dizziness or light-headedness
  • Changes in thirst or urination
  • Seizures (in severe imbalance)
  • Poor concentration or memory lapses
  • No symptoms at all in mild or early imbalance

Recommended for individuals experiencing unexplained fatigue, muscle cramps, headaches, or changes in thirst or urination. Ideal for those with conditions that affect fluid or electrolyte balance—such as kidney disease, adrenal disorders, or prolonged diarrhoea or vomiting. Also suitable for people on diuretics, low-sodium diets, or anyone wanting to proactively monitor hydration and electrolyte status.

  • Hyponatraemia (low sodium levels)
  • Hypernatraemia (high sodium levels)
  • Dehydration or overhydration
  • Kidney dysfunction or chronic kidney disease
  • Adrenal gland disorders (e.g. Addison’s disease, Cushing’s syndrome)
  • Congestive heart failure or liver cirrhosis
  • Syndrome of inappropriate antidiuretic hormone secretion (SIADH)
  • Electrolyte imbalance due to diuretics or IV fluids
  • Chronic vomiting, diarrhoea, or excessive sweating
  • Conditions affecting fluid retention and balance

Symptoms

  • Fatigue or low energy
  • Muscle weakness or cramps
  • Headaches or confusion
  • Nausea or vomiting
  • Restlessness or irritability
  • Dizziness or light-headedness
  • Changes in thirst or urination
  • Seizures (in severe imbalance)
  • Poor concentration or memory lapses
  • No symptoms at all in mild or early imbalance

Who should be test

Recommended for individuals experiencing unexplained fatigue, muscle cramps, headaches, or changes in thirst or urination. Ideal for those with conditions that affect fluid or electrolyte balance—such as kidney disease, adrenal disorders, or prolonged diarrhoea or vomiting. Also suitable for people on diuretics, low-sodium diets, or anyone wanting to proactively monitor hydration and electrolyte status.

When to test

  • Hyponatraemia (low sodium levels)
  • Hypernatraemia (high sodium levels)
  • Dehydration or overhydration
  • Kidney dysfunction or chronic kidney disease
  • Adrenal gland disorders (e.g. Addison’s disease, Cushing’s syndrome)
  • Congestive heart failure or liver cirrhosis
  • Syndrome of inappropriate antidiuretic hormone secretion (SIADH)
  • Electrolyte imbalance due to diuretics or IV fluids
  • Chronic vomiting, diarrhoea, or excessive sweating
  • Conditions affecting fluid retention and balance

What's measured

What gets tested

Complete panel for your health

Electrolyte

Sodium: An essential electrolyte that helps regulate fluid balance, nerve function, and muscle contractions in the body. Why measure: Critical for maintaining blood pressure, proper hydration, and normal nerve and muscle function.