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Test Code LAB02936701 Blood Gases, Venous Cord Blood

Methodology

Electrode Methodology


Includes pH, pCO2, pO2, bicarbonate (HCO3), base excess, and % O2 saturation.

Performing Laboratory

CentraCare Laboratory Services

Specimen Requirements

Specimen Type: Venous cord blood

Container/Tube: Heparinized blood gas syringe

Specimen Volume: 0.5 mL

Minimum Volume: 0.25 mL

Collection Instructions:

1. Immediately mix and send in syringe.

2. Avoid exposure of specimen to atmosphere.

3. If clots are present, testing will be canceled and nursing staff will be notified.

Specimen Transport Temperature

Ambient

Reference Values

pH: 7.30-7.40 units
Critical values (automatic call-back): ≤7.25 units or ≥7.60 units


pCO2: 33.9-48.3 mm Hg
Critical values (automatic call-back): ≤20 mm Hg or ≥70 mm Hg


pO2: 22.8-34.6 mm Hg
Critical value (automatic call-back): <30 or >40 mm Hg


HCO3: 23-28 mmol/L
Critical values (automatic call-back): ≤14 mmol/L or ≥40 mmol/L

 

Base excess: -2.0 to 3.0 mmol/L


% O2 saturation: 60-80%

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

82803