Sign in →

Test Code LAB77 Blood Gases Cord Blood Venous

Useful For

Evaluating respiratory function and acid-base balance.

Methodology

Potentiometric Sensors (pCO2, pH, Ca++)

Amperometric Sensors (pO2)

Spectrophotometry (O2Hb, COHb, MetHb, sO2) 

Profile Information

Testing Includes: 

  • pH
  • pCO2
  • pO2
  • Calculated HCO3
  • Base Excess
  • O2 Saturation %

Performing Laboratory

Bozeman Health Laboratory Services

Specimen Requirements

Specimen must arrive within 30 minutes of draw.

 

Specimen Type: Venous cord blood

Container/Tube: Heparinized blood gas syringe

Specimen Minimum Volume: 0.25 mL

Collection Instructions:

1. Draw venous cord blood anaerobically into a heparinized blood gas syringe.

2. Expel air bubbles, remove needle from syringe and cap.

3. Send to the laboratory immediately.  Specimen must arrive within 30 minutes of draw.

 

Specimen Rejection: Air bubble or clotted blood

Specimen Transport Temperature

Ambient <30 minutes

Specimen Stability

Specimen Type Temperature Time
Cord blood, venous Ambient 30 minutes

Reference Values

Component Normal Range
pH 7.25-7.45
pCO2

27-49 mmHg
pO2 17-41 mmHg
HCO3 15.8-24.2 mmol/L
Base Excess meq/L (no reference values established)
O2 Saturation % 60-85%

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

82803-Blood gases, any combination of pH, pCO2, pO2, CO2, HCO3 (including measured oxygen saturation)