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CALCIUM, IONIZED
Number 281
CPT Code 82330
Alias CALCIUM, IONIZED
Specimen Container SST
Specimen Type Serum
Turn Around Time
Days Performed
Reference Range 4.5-5.6 mg/dL
Alternate Specimen
Volume 1 ml serum
Stability Ambient 14 Days
Stability Refrigerated 14 Days
Stability Frozen N/A
Patient Preparation
Methodology
Ion-selective electrode (ISE)
Limitations
Total calcium remains the first line test for evaluation of calcium abnormality.
Rejection Criteria
Opened gel-barrier tube; hemolysis; plasma specimen
Additional Instructions
Send a separate tube for test; affix labeling on top of tube indicating “DO NOT OPEN”
Performing Laboratory Reference Laboratory
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