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Test Code Post Filter Calcium Ionized Calcium Level, Dialysis Post Filter

Useful For

Dialysis

Patient Preparation

No special patient preparation required

Collection Method

Venous collection

Minimum Volume

1 mL

Container

Lt Green / Plasma Separator / Lithium Heparin

Preferred Specimen

Light Green Top (lithium heparin) plasma

Acceptable Specimens

Serum:

  • Gold Top SST

  • Red Top

Plasma:
  • Light Geen Top (lithium heparin)

Reference or Target Ranges

Not defined

Reportable Units

mmol/L

Critical Value

<0.95 mmol/L or >1.45 mmol/L

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, specimen uncapped >2 hours

Specimen Stability



Ambient
 2 hours once opened and recapped
Refrigerated (4°C to 8°C)
 24 hours unopened; 2 hours opened and recapped
Frozen(-40°C to 0°C)
 N/A

Performance Information



Days and Time Performed
 24/7
Expected Turn Around Time
 Stat: 1 hour
Routine: 4 hours
Stat Availability
 Yes
Performing Bench
 UH Chemistry, WCH Chemistry
Methodology/Method Description
 NOVA pHOX – Electrode calculation

Special Handling

Applies to dialysis procedure only

CPT Codes

82330