All tests · Electrolytes & Minerals
Electrolytes & Minerals
Normal range 8.6-10.2 mg/dL (2.15-2.55 mmol/L SI). Specimen: Serum.
Also known as: serum calcium.
Combined adult band. LabVals does not publish separate men's, women's, or pediatric ranges for Calcium, Total (Ca²⁺); those can be narrower than the band shown.
| Specimen | Serum |
|---|---|
| Conventional range | 8.6-10.2 mg/dL |
| SI range | 2.15-2.55 mmol/L |
| Conversion factor | ×0.25 (conventional → SI) |
| Critical value | < 6.0 or > 13.0 mg/dL |
| Panel | Electrolytes & Minerals |
Convert any Calcium, Total (Ca²⁺) result between units on the unit converter.
The standard teaching reference range for Calcium, Total (Ca²⁺) is 8.6-10.2 mg/dL in conventional units, or 2.15-2.55 mmol/L in SI units. This value is measured in serum.
For Calcium, Total (Ca²⁺), the commonly taught critical (panic) value is: < 6.0 or > 13.0 mg/dL. Critical results are reported to the provider immediately under your facility's policy.
Source: Adult reference values compiled from Pagana & Pagana, Mosby's Diagnostic and Laboratory Test Reference, and Fischbach & Dunning, A Manual of Laboratory and Diagnostic Tests. Reference ranges vary by laboratory, method, age, sex, and population - always use the range printed on the actual result.
Above the range
What causes a high Calcium, Total (Ca²⁺)? Read as its own page
Below the range
What causes a low Calcium, Total (Ca²⁺)? Read as its own page
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