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Additional Codes
LAB79
Performing Laboratory
MBMC Main Laboratory
Methodology
Amperometric and Potentiometric
Specimen Requirements
Specimen Type: Whole blood
Container/Tube: Lithium heparin syringe
Alternative Container/Tube: Dark Green- Lithium Heparin Tube
Specimen Volume: 2 mL
Specimen Minimum Volume: 1 mL
Additional Information: Syringe should be placed on ice immediately after draw to prevent gross changes in values by continued metabolism of RBCs and especially WBCs.
Specimen Transport Temperature
On wet ice
Day(s) Test Set Up
Monday through Sunday
Turnaround Time:
Within 1 hour
Reference Values
pH: 7.32-7.43
pCO2: 40-50 mm Hg
pO2 : No reference range
tHb: match hematology ranges with age and gender breakouts
CO Hb: 0.0-2.9 %
CA++:
0-1 day: 4.5-5.75 mg/dL
1 -4 day: 4.15-5.40 mg/dL
4-180 day: 4.85-5.80 mg/dL
6-30 mo: 4.60-5.50 mg/dL
30 mo - 18 yr: 4.45-5.25 mg/dL
18-150 yr: 4.50-5.10 mg/dL
HCO3: 20.0-30.0 mmol/L
Base Excess: No established Reference range.
Met Hb: 0.0-1.9 %
Critical values (automatic call-back):
pH: <7.2 or >7.55
CA++: <3.2 or >6.48 mg/dL
tHb: <or= 6.5 g/dL
CO Hb: 20% or greater
Met Hb: 5% or greater
Test Classification and CPT Coding
Test Classification:
This test has been cleared or approved by the U.S. Food and Drug Administration and is used per manufacturer’s instructions.
CPT Code:
82803