Educational information only. At Precursor, blood testing is requested and reviewed by a clinician and considered alongside your history and other markers, not as a stand-alone diagnosis. Testing is performed in NATA-accredited laboratories to ISO 15189 standards.

What is chloride?

Chloride is an electrolyte that works closely with sodium to manage the balance of fluids in your body and to help maintain the correct acidity, or pH, of your blood. It tends to move in step with sodium and is a routine part of an electrolyte panel.

Why it matters

Chloride is rarely the star of the show, but it is a useful supporting marker. Together with bicarbonate, it helps a clinician assess your acid-base balance, and its relationship with sodium adds detail to the picture of hydration and kidney function.

What your results can mean

Higher than optimal

A high chloride often tracks with high sodium or with certain acid-base shifts, and is interpreted alongside those markers rather than alone.

Lower than optimal

A low chloride can follow fluid losses or particular acid-base changes. As with the other electrolytes, its meaning comes from the overall pattern.

Reference ranges in Australia

Chloride is reported in millimoles per litre (mmol/L). As a general guide, a value in the region of 95 to 110 mmol/L is often considered within range, though this varies by laboratory. Read your result against the range on your own report.

Test your electrolytes with Precursor

Chloride is most meaningful within the full electrolyte picture. At Precursor it is measured as part of Full Advanced Bloods, a single clinician-reviewed blood draw covering your kidney, heart, metabolic, hormonal, liver, thyroid and nutrient markers together, giving you and your clinician a broad baseline to understand and track.