| Laboratory: | Clinical Biochemistry | ||||||||||||||||||||
| Test Name: |
CALCIUM, IONIZED - (S)
Test Code:
ICA
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| Clinical Information: |
Test Indications: Second order test used to assess calcium status in patients with abnormal albumin and serum protein concentrations or in the presence of molecules that may influence free calcium concentration (e.g. citrate, increased lactate, altered pH, etc).
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| Collection Devices: |
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| Specimen Required: |
Serum: 2.0 mL
Pediatric Serum: 0.3 mL
Adult: FULL draw, unopened SST tube Pediatric: FULL draw, unopened SST microtainer tube Collection Information: PARTIAL draw tubes are not acceptable for ionized calcium testing. If a tourniquet is used, it must be left on until all the required blood is drawn (but no longer than 3 minutes), and patient should not be allowed to exercise the forearm. The patient must avoid strenuous activity immediately before phlebotomy. Avoid fist clenching during phlebotomy. Blood collection from central venous catheter lines and dialysis catheters with locking solutions containing anticoagulants must be done post saline infusion of the line and discard of minimum 5 mL of blood to adequately remove residual anticoagulants. Special Processing: Centrifuge samples within 2 hours of collection. Do not remove stopper. If sample cannot be analyzed immediately, it can be stored anaerobically at 4 C for up to 48 hours. |
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| Referral: |
Adult Volume: FULL draw, unopened SST tube
Pediatric Volume: FULL draw, unopened SST microtainer tube |
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| Requisition: | |||||||||||||||||||||
| Reference Values: |
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| Availability: |
Stat or Routine
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| More Information: |