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HelpTest Code LAB1247 Calcium, Ionized, Whole Blood
Additional Codes
| Test Name in EPIC | EPIC Test Code | Mnemonic |
|---|---|---|
| CALCIUM IONIZED | LAB1247 | CAION |
Useful For/Utility
Assessing calcium states during liver transplantation surgery, cardiopulmonary bypass, or any procedure requiring rapid transfusion of whole blood in neonates and critically ill patients
Second-order test in the evaluation of patients with abnormal calcium values
Methodology
Ion-Selective Electrode (ISE)
Clinical Information
Ionized calcium, which accounts for 50% to 55% of total calcium, is the physiologically active form of calcium.
Low ionized calcium values are often seen in renal disease, critically ill patients, or patients receiving rapid transfusion of citrated whole blood or blood products.
Increased serum ionized calcium concentrations may be seen with primary hyperparathyroidism, ectopic parathyroid hormone-producing tumors, excess intake of vitamin D, or various malignancies.
Specimen Requirements
Specimen Type: Lithium heparin whole blood
Container/Tube: Dark-green top (lithium heparin) Microtainer not acceptable
Specimen Volume: 2 mL
Syringe Specimen Minimum Volume: 0.15 mL
Collection Instructions:
1. Keep specimen anaerobic (do not transfer).
2. Send specimen in original tube.
3. If sending syringe, remove needle, express air bubbles, and cap with rubber stopper
Specimen Transport Temperature
Refrigerate 24 hours/Ambient 4 hours OK/Frozen NO
Day(s) Test Set Up
Monday through Sunday
Performing Laboratory
Chemistry -
St. Joseph's Medical Center Lab
Deer River Hospital Lab, Northern Pines Lab, SMDC Clinical Lab
West Region: Fargo Hospital Lab, Fosston Hospital Lab, St. Mary's - Detroit Lakes Hospital Lab
Test Classification and CPT Coding
82330
Reference Values
4.4-5.4 mg/dL