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Metabolism & Renalmmol/L

Ionized Calcium

Ionized calcium is the unbound, biologically active fraction directly involved in neuromuscular activities.

Common laboratory aliases and abbreviations:Calcium ioniséIonized calciumCa2+Calcium libreCalcio iónicoCalcio libre

Test your personal value

Enter the number from your lab report to instantly see how it compares to reference ranges.

mmol/L
1.23mmol/L
1.15
1.32
‹ LowRange: 1.15 – 1.32 mmol/LHigh ›

Physiological Reference Ranges

The ranges below represent standard adult physiological values. Your laboratory's printed reference range always takes precedence.

Adults (general)

1.15 – 1.32 mmol/L

Adult females

1.15 – 1.32 mmol/L

Adult males

1.15 – 1.32 mmol/L

Common alternative units:
mg/dL(×0.25 mmol/L)

What does a low result mean?

A subtle dip can happen during hyperventilation or temporary shifts in blood pH.

What does a high result mean?

A mild elevation can reflect active parathyroid regulation or energetic vitamin supplementation.

Questions ready for your doctor

Bring these questions to your next consultation to discuss with your healthcare practitioner:

  • Does this confirm that my active calcium fraction is well balanced?
  • Would evaluating parathyroid hormone (PTH) provide helpful context?
  • Is this result generally reassuring?

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Important information — Medical notice

ScanMyLab is for informational purposes only. It does not provide a diagnosis and never replaces the advice of your doctor or laboratory.