Calcium, Ionized
Abbrev Code: | ICAW | ||
Order Code: | LAB3077 | Order Name: | Calcium Ionized Whole Blood |
Synonyms: | Ionized Calcium, Outreach Clients | ||
Methodology: | Ion selective electrode | ||
CPT Codes: | 82330 x1 | ||
Turnaround Time: | Performed and reported 24 hours/day. |
Collection Instructions
Specimen: | Blood |
Optimal Volume: | 1 mL |
Minimum\Peds Volume: | 0.5 mL (3 mL syringe); 0.2 mL (tuberculin syringe); 0.1 mL (capillary tube) |
Container: | Green (lithium heparin) on ICE, St Johns/Woodwinds-Green (lithium heparin, no gel), Dry heparin syringe Alternate Containers: Capillary (lithium heparin) gas tube |
Collection Instructions: | Inpatient Collection Instructions:
Preferred collection is in a dry heparinized syringe (e.g., with blood gases).
Alternately, a plasma sample may be collected in a green tube.
Outreach and Clinic Collection Insttuctions:
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Causes for Rejection: | Sample not received within 30 minutes of collection at room temperature. Sample not received within 60 minutes on ice. Sample not analyzed within 4 hours of collection. |
Processing and Shipping
Specimen Processing: | Whole blood samples. Do not process. Do not store. Whole blood samples must be on ice within 30 minutes of collection; maintained anaerobically and analyzed within 4 hours. If specimen has been exposed to air, analyze within 1 hour if pH is 7.35-7.45, otherwise recollect.
Plasma samples: Centrifuge with stopper in place within one hour of collection. Do not open the tube or split the sample. Store in refrigerator. If collected in a red top (plain) tube, allow the sample to clot for 15 minutes before centrifuging; do not remove stopper. |
Shipping Instructions: | Ship unopened (anaerobically) at refrigerated temperature. |
Stability: | Whole blood samples are stable for 30 minutes at room temperature or 60 minutes on ice if maintained anaerobically.
Centrifuged, refrigerated specimens are acceptable 7 days if stopper is not removed. Specimens that have been exposed to air should be analyzed within 1 hour if pH is 7.35-7.45, otherwise recollect. Whole blood samples on ice are stable for 4 hours. |
Test Performed at or Referral Lab | Chemistry (CSC Mpls, Lakes, Northland, Ridges, Southdale, St. John's, UMMC East Bank, UMMC West NICU, UMMC/UMMCH-West Bank, Woodwinds) |
Interpretive
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