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Calcium
MessageAfter centrifugation, if not in gel barrier tube, pour off plasma or serum into an aliquot tube.
Test Code
LAB53
Alias/See Also
Ca
CPT Codes
82310
Preferred Specimen
Lithium Heparin (PST)
Minimum Volume
4.5 ml (2.0 ml min) lithium heparin (green); alternate-SST (gold) or Red (no additive) tubes
Other Acceptable Specimens
Gold (SST)
Instructions
Spin PST or SST and send to lab
Transport Container
1 ml (200 ul minimum) plasma; alternate-serum
Transport Temperature
Room temp
Specimen Stability
Separated from cells: 7 days room temp, 22 days refrigerated
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Icteric: >40mg/dL bilirubin; Hemolysis: >500mg/dL hemoglobin; Lipemia: >1000mg/dL triglycerides
Methodology
Ion-Selective Electrode (ISE)
Setup Schedule
Mon- Sun
Reference Range
Serum/Plasma Reference Range = 8.4 – 10.2 mg/dL
Clinical Significance
Measurement 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).
chronic renal disease and tetany (intermittent muscular contractions or spasms).
Performing Laboratory
Piedmont Athens Regional
