A normal calcium level is not a deficiency. A calcium deficiency, or hypocalcemia, is defined as a level below the normal range. The normal range depends on whether total serum calcium or ionized calcium is measured.
Here's a breakdown of normal ranges:
- Total Serum Calcium: The normal range is generally 8.5 to 10.5 mg/dL (2.12 to 2.62 mmol/L).
- Ionized Calcium: The normal range is 4.65 to 5.25 mg/dL (1.16 to 1.31 mmol/L).
Any value below these ranges would indicate a calcium deficiency (hypocalcemia). According to the provided reference, numbers below the ionized calcium range of 4.65 to 5.25 mg/dL (1.16 to 1.31 mmol/L) are considered hypocalcemic.
| Measurement | Normal Range | Indication of Deficiency (Hypocalcemia) |
|---|---|---|
| Total Serum Calcium | 8.5 to 10.5 mg/dL | Below 8.5 mg/dL |
| Ionized Calcium | 4.65 to 5.25 mg/dL | Below 4.65 mg/dL |
