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HelpTest Code LAB1806 Blood Gases, Capillary Blood
Additional Codes
| Test Name in EPIC | EPIC Test Code | Mnemonic |
|---|---|---|
| CAP BLOOD GASES | LAB1806 | CAPGS |
Methodology
pH: pH-sensitive glass electrode in conjunction with a reference electrode
pCO2: An electrode that measures pCO2 ions directly as a pH change due to the diffusion of CO2 across the membrane
PO2: Measured through a Clark-type electrode. Oxygen diffuses through the membrane and continuously replaces oxygen molecules in the electrolyte layer during a cathode reaction.
O2 Saturation: Calculated
HCO3: Calculated
Includes pH, pCO2, PO2, O2 saturation, HCO3, and base excess.
Specimen Requirements
Specimen must arrive within 30 minutes of collection.
Specimen Type: Capillary blood
Container/Tube: Heparinized capillary tube
Specimen Volume: 0.25 mL
Specimen Minimum Volume: 0.15 mL
Collection Instructions:
1. Send specimen in original tube. Microtainers are not acceptable for specimen collection.
2. Express air bubbles and cap ends of tube.
Specimen Transport Temperature
Ambient 30 minutes/Refrigerate NO/Frozen NO
Day(s) Test Set Up
Monday through Sunday
Performing Laboratory
Chemistry -
East Region: Deer River Hospital Lab, SMDC Clinical Lab, St. Mary's Hospital - Superior Lab, Virginia Hospital Lab
West Region: Fargo Hospital Lab, Fosston Hospital Lab, St. Mary's - Detroit Lakes Hospital Lab
Test Classification and CPT Coding
82803
Reference Values
pH
7.35-7.45
pCO2
35-45 mm Hg
HCO3
0 days-1 year: 17-24 mEq/L
>1 year: 22-28 mEq/L
PO2
40-50 mm Hg
O2 SATURATION
72.0-87.0%
BASE EXCESS
No established reference values