Calcium (Corrected), Plasma
Tests:Calcium (Corrected), Plasma
Overview | |
|---|---|
| Department | Biochemistry |
| Test Code | |
| Synonyms | Albumin Corrected Calcium |
| Availability | Monday - Sunday, testing routinely available out of hours |
| Turnaround Time | 1 hour urgent
2 hours routine |
| Stability – Add test | |
Specimen Requirements | |
| Specimen | Plasma
Serum |
| Preferred | 6 mL Red-Top |
| Acceptable | In emergency 4 mL Li-Hep Green-Top |
| Unacceptable | |
| Specimen Transportation | |
| Paediatric Requirements | 600 µL Li-Hep Microtainer |
Aliquot Requirements | |
| Sample | |
| Preferred Volume | |
| Minimum Volume | |
| Aliquot Transportation | |
Clinical Information | |
| Reference Intervals | Reference range: 2.2 - 2.6 mmol/L |
| Test Method | Ci8200 analyser |
| Advanced Notice | Not required |
| Patient Preparation | Not required |
Comments | |
| Calculation corrects total calcium for available albumin binding capacity.
Correction is useful for albumin levels between 20 and 45 g/L. Outside this range, significant errors may occur. Direct measurement of ionised calcium will be more useful. The formula used varies slightly between laboratories. Corrected Calcium = Calcium + 0.012 x (39.9 - albumin) | |
| Owner | Clair Crossley (Crossley1) |
|---|---|
| Last reviewed | 12.09.2025 |
| Next review | 12.09.2026 (Overdue) |