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Blood Gas, Capillary, Blood*

Important Note

*This test is orderable in Cerner as Blood Gas Capillary

Methodology

Ion-Selective Electrode (ISE)

Includes pH, pO2, pCO2, O2 saturation, base excess (calculation), HCO3 (calculation), and total CO2 (calculation).

Performing Laboratory

Rutland Regional Medical Center Laboratory

Specimen Requirements

Specimen must arrive within 30 minutes of draw.

 

Specimen Type: Capillary blood-Clotted blood is not acceptable.
Container/Tube: Heparinized capillary tube

Specimen Volume: 120 µL

Collection Instructions:

1. Collect capillary blood anaerobically.

2. Expel air bubbles and plug ends-Air bubble is not acceptable.

Specimen Transport Temperature

Ambient

Reference Values

<1 year:

pH

7.39-7.49

Critical values (automatic call-back) any age: <7.2 or >7.6

 

pCO2

27-44 mm Hg

Critical values (automatic call-back) any age: <20 or >70

 

pO2

37-65 mm Hg

Critical values (automatic call-back) any age: <50

 

BICARBONATE

18-27 mmol/L 

Critical value (automatic call-back): <15 mEq/L

 

BASE EXCESS

-2.0 - +2.0 mmol/L

 

O2 SATURATION %

>88% saturation

 

O2 CONTENT

19.0%-25.0%

 

Pediatric reference values have been provided by Mayo Medical Laboratories.

Day(s) Performed

Daily

Analytical Time:

1 hour

Available STAT

Test Classification and CPT Coding

82803