CO2

This test measures total carbon dioxide (CO₂) in your blood, most of which is in the form of bicarbonate (HCO₃⁻). It reflects your acid-base balance and metabolic buffering capacity. Low levels can indicate metabolic acidosis (often due to overtraining, under-recovery, or poor breathing/respiration), while high levels may point to alkalosis, dehydration, or chronic lung issues. It’s a quiet but critical marker for recovery, mitochondrial health, and electrolyte stability.

Unit

mmol/L