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Test Code CA ION Ionized Calcium, Blood

Additional Codes

LAB54

Performing Laboratory

Central Peninsula Hospital

Collection Method

Venipuncture

Container

Dark green top tube (Lithium Heparin)

Specimen Type

Preferred

  • Dark green top tube (Lithium Heparin)

 

Acceptable

  • Heparinized Syringe
  • Light Green Lithium Heparin (unspun whole blood)

Minimum Volume

0.5ml

Specimen Stability

Ambient 30 minutes
Refrigerated (4°C to 8°C) N/A
Frozen(-40°C to 0°C) N/A

Reference or Target Ranges

COMPONENT Age Reference Range
pH All ages 7.32-7.42
Ca++ (mmol/L)

< 1y

>1y

 

1.15-1.45

1.15-1.33

 

Reportable Units

Varies

Critical Value

Component Age Critical Low Critical High
pH All ages  ≤7.2 ≥7.6
Ca++ (mmol/L)

< 1y

>1y

<0.55

<0.55

>1.51

>1.51

Reasons for Rejection

Hemolysis Threshold No gross hemolysis
Icterus Threshold No significant interference
Lipemia Threshold No significant interference
Other QNS, contaminated, improperly labeled, improper specimen type

Performance Information

Days and Time Performed 24/7
Expected Turn Around Time

STAT: 60 minutes

Routine: 4 hours
Stat Availability Yes
Performing Bench CPH Chemistry
Methodology/Method Description GEM Premier 5000

CPT Codes

82330

Last review/edit date

2025