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Test Code LAB1398 Blood Gases Cord Blood Arterial

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: Arterial cord blood

Container/Tube: Heparinized blood gas syringe

Specimen Minimum Volume: 0.25 mL

Collection Instructions:

1. Draw arterial 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

Specimen Stability

Specimen Type Temperature Time
Cord blood, arterial Ambient 30 minutes

Reference Values

Component Normal Range
pH 7.18-7.38
pCO2

32-66 mmHg
pO2 6-31 mmHg
HCO3 17.0-27.0 mmol/L
Base Excess meq/L (no reference values established)
O2 Saturation % % (no reference values established)

 

Critical value (automatic call-back): pH ≤ 7.15, Base Excess ≤ -7 meq/L

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)