What are the limitations of the hypercalcaemia severity classification?

While the hypercalcaemia severity classification is highly validated, it should not replace clinical judgment. OpiCalc provides the latest evidence-based limitations for the hypercalcaemia severity classification to ensure safe bedside use and optimal diagnostic accuracy.

How does the hypercalcaemia severity classification compare to other Endocrinology scores?

The hypercalcaemia severity classification is a gold-standard diagnostic tool. OpiCalc provides side-by-side clinical guidance to help clinicians choose the most specific evidence-based tool for their patient's presentation.

Is the hypercalcaemia severity classification free to use?

Yes. OpiCalc provides the hypercalcaemia severity classification completely ad-free and optimized for mobile bedside use, ensuring you can calculate medical risk swiftly and without distraction.

Hypercalcaemia severity classification Score and Guidance

CLINICAL REFERENCE

CLINICAL INSIGHT

When to Use

Determining the urgency of treatment for elevated calcium.
Evaluating symptoms of "Bones, Stones, Groans, and Psychic Overtones".
Triaging patients with suspected malignancy-associated hypercalcaemia or PHPT.

CLINICAL INSIGHT

How it Works

Severity Tiers (mg/dL)

Category	Calcium (mg/dL)	Calcium (mmol/L)
Mild	10.5 – 12.0	2.6 – 3.0
Moderate	12.0 – 14.0	3.0 – 3.5
Severe (Crisis)	> 14.0	> 3.5

CLINICAL INSIGHT

Practical Pearls

Ionized Calcium

While corrected calcium is helpful, Ionized Calcium (iCa) is the gold standard, especially in critically ill or acidotic patients, as it represents the physiologically active fraction.

The Rule of 14

Any calcium level > 14 mg/dL is a medical emergency regardless of symptoms. The primary risk is sudden cardiac death from QTc shortening and subsequent arrhythmias.

CLINICAL INSIGHT

Evidence Base

Primary Source

Treatment of hypercalcemia.

Shane E, Berenson JR.UpToDate2023

When to Use

When to Use

How it Works

Severity Tiers (mg/dL)

Practical Pearls

Ionized Calcium

The Rule of 14

Evidence Base

Primary Source

Hypercalcaemia Severity Classification

When to Use

When to Use

How it Works

Severity Tiers (mg/dL)

Practical Pearls

Ionized Calcium

The Rule of 14

Evidence Base

Primary Source

Hypercalcaemia Severity Classification

Clinical Evidence and Methodology

When to Use

When to Use

How it Works

Severity Tiers (mg/dL)

Practical Pearls

Ionized Calcium

The Rule of 14

Evidence Base

Primary Source

Hypercalcaemia Severity Classification

Clinical Evidence and Methodology

When to Use

When to Use

How it Works

Severity Tiers (mg/dL)

Practical Pearls

Ionized Calcium

The Rule of 14

Evidence Base

Primary Source

Hypercalcaemia Severity Classification