Includes: pH, pCO₂, pO₂ (venous), HCO₃⁻, Base Excess, lactate, venous O₂ saturation
Electrolytes: Na⁺, K⁺, Cl⁻, ionized Ca²⁺ (± Mg²⁺)
Indications: Suspected acid–base disorders ; Dehydration/electrolyte imbalance ; Monitoring in cardiopulmonary conditions ; Perioperative and critical care monitoring
Patient prep:
- No fasting required
- Avoid vigorous exercise for 30–60 min
- Tell us about oxygen therapy, medications, smoking
Turnaround: rapid — typically same day.
Note: Venous values differ from arterial; use arterial blood gases for precise oxygenation assessment, while venous sampling is excellent for acid–base and electrolyte status.