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Calcium
MessageMeasurement of calcium is used in the diagnosis and treatment of parathyroid disease, a variety of bone diseases, chronic renal disease and tetany (intermittent muscular contractions or spasms). Although more than 99% of body calcium exists in bones and teeth, it is the calcium in blood which is of most concern clinically.
Test Code
CAL
Alias/See Also
LAB3000039
CPT Codes
82310
Preferred Specimen
2.0 mL serum collected in a gold serum separator tube (SST)
Minimum Volume
0.5 mL serum
Other Acceptable Specimens
2.0 mL serum collected in an orange rapid clot serum separator tube (RCT)
2.0 mL plasma collected in a light green lithium heparin plasma separator tube (PST)
2.0 mL plasma collected in a light green lithium heparin plasma separator tube (PST)
Specimen Stability
7 days at Room Temperature (15-25oC)
Approximately 22 days when Refrigerated (2-8o)
1 year when frozen at <-20oC
Approximately 22 days when Refrigerated (2-8o)
1 year when frozen at <-20oC
Methodology
Arsenazo III
Reference Range
| Sex | Age | Reference Range |
|---|---|---|
| M/F | 0 - 30 days | 8.5 - 10.6 mg/dL |
| M/F | 1 month - 1 year | 8.7 - 10.5 mg/dL |
| M/F | 2 - 6 years | 8.5 - 10.6 mg/dL |
| M/F | 7 - 9 years | 8.5 - 10.3 mg/dL |
| M/F | 10 - 12 years | 8.6 - 10.2 mg/dL |
| M/F | 13 - 15 years | 8.4 - 10.2 mg/dL |
| M/F | 16 - 18 years | 8.4 - 10.3 mg/dL |
| M/F | 19 - 150 years | 8.6 - 10.3 mg/dL |
Performing Laboratory
Penn Medicine Lancaster General Health
