Calcium, Free or Ionized

Source

Blood

Mnemonic

ICA

Specimen Requirements

1 x 5 mL gold top SST tube.

DO NOT leave tourniquet on longer than 1 minute

Microtainer tubes are not acceptable

Pediatric: Heparinized whole blood is acceptable if collected in an arterial blood gas syringe or calcium balanced heparin capillary tube. This type of collection is usually by Respiratory Therapy but may be by phlebotomist, if required.

Specimen Handling

Specimen stable uncentrifuged for 1 hour only, therefore it must be centrifuged within 1 hour post collection. DO NOT OPEN TUBE.

PSC: Centrifuge and transport unopened tube directly to FMC.
Extra-regional: Transport centrifuged, unopened sample on ice. Keep specimen COLD but not FROZEN. DO NOT attach tube directly to ice pack.

Additional Information

This test cannot be collected by Mobile Collection Services.

Testing Location

Chemistry-FMC and Respiratory ACH, FMC, PLC & RGH

Testing Frequency

As required

Alternate Name(s)

Ionized Calcium

Reference Interval

0-28 days

0.90-1.30 mmol/L

29 days-150 years

1.15-1.35 mmol/L

Click here for critical values

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UNCONTROLLED PRINT COPY. VALID ONLY ON DAY OF PRINT: