Test Code CO2 TOTAL Carbon Dioxide (CO2), Plasma
Performing Laboratory
NRL-Chemistry
Methodology
Rate Change of pH
Note: This test is also available as part of #BMP Basic Metabolic Panel, #COMP Comprehensive Metabolic Panel, #LYTES Electrolyte Panel, and #RENAL Renal Function Panel. See Common Panel Test Combinations in Special Instructions to avoid duplicate test requests when multiple panels are ordered.
Specimen Requirements
Specimen must arrive within 14 hours of draw.
Specimen Type: Plasma
Container/Tube: Light-green top (lithium heparin)
Specimen Volume: Full tube
Collection Instructions:
1. Spin down unopened (vacuum intact) tube within 45 minutes of draw.
2. Keep specimen anaerobic (do not open or transfer).
Reference Values
≥16yrs: 22-32 mmol/L
1mo-16yrs: 20-28 mmol/L
0-1mo: 17-24 mmol/L
Alert values (automatic call-back): ≤10 mmol/L or ≥40 mmol/L
Day(s) Test Set Up
Monday through Sunday
Turnaround Time:
STAT-45 minutes
Routine-shift
Specimen Transport Temperature
Refrigerate ≤14 hours
Test Classification and CPT Coding
82374