Electrolyte check referral

An electrolyte check measures several key minerals in the blood that work together to maintain balance within the body.

Sodium (Na⁺)

• Helps regulate fluid balance and blood pressure

Potassium (K⁺)

• Important for heart rhythm and muscle function

Chloride (Cl⁻)

• Helps maintain fluid and acid–base balance

Bicarbonate (CO₂)

• Reflects acid–base balance in the body

Each electrolyte plays a specific role in keeping the body functioning normally.

If you are experiencing an irregular heartbeat, muscle weakness or paralysis, confusion, seizures, or severe dizziness, these may indicate a serious electrolyte imbalance requiring emergency care — call 000 or attend an Emergency Department immediately. Do not book a telehealth referral for these presentations.

• Fasting is usually not required
• Drink fluids as advised by your doctor
• Avoid heavy exercise before the test if possible
• Inform your doctor about any medications or supplements you take

Your results provide a quick picture of how well your body is balancing fluids and essential minerals.

• Results show whether electrolyte levels are within expected ranges
• Abnormal levels may reflect dehydration, medication effects, or illness
• Results are interpreted alongside symptoms and medical history

Your GP can explain what the results mean for you personally.

An electrolyte check is useful, but it has some limitations.

• Electrolyte levels can change quickly
• A single test may not reflect long-term balance
• Results must be interpreted within a clinical context

When used alongside other details, the test helps support informed, ongoing care.