Blood Gas, Venous

Included Tests

Base Excess; O2 Sat; pCO2; pH; pO2

Specimen Requirements

4.0 mL Whole Blood in a Green Top Tube - Li Heparin (FULL TUBE)

Alternate Specimen

Minimum of 0.5 mL Whole Blood in a 3.0 mL Syringe with Heparin
or
Minimum of 0.2 mL Whole Blood in a Tuberculin Syringe with Heparin

All extra air must be expelled at collection from syringe

Remove needle from syringe before submitting to the laboratory

TransportAndStorage

10 minutes Ambient
2 hours Iced

Collection Instructions

Due to smearing of print while on ice, please label specimen following procedure and a second label in the pocket of transport bag with requisition

Place on ice immediately after collection for up to 2 hours

Minimum Volume

Neonatal Volumne

Reference Range:

Base Excess:  -2.0 - 2.0
O2 Sat: 70% - 75%
pCO2: 40 - 50 mmHg
pH: 7.32 - 7.42
pO2: 25 - 47 mmHg

Critical Ranges:

Low Limits:                          High Limits
pCO2: < 20                           pCO2: > 70
pH: < 7.10                             pH: > 7.60

Methodology:

• Co-oximetry
• Ion Selective Electrode (ISE)

CDM

01426661

CPT Coding

82805