It is used with the Wondfo’s blood gas analyzer test card (electrochemistry), measuring a patient’s pH balance, carbon dioxide partial pressure (pCO2), oxygen partial pressure (pO2 ), sodium ion (Na+), potassium ion (K+), calcium ion (Ca2+), chloride ion (Cl–), hematocrit (Hct), Lactic Acid (Lac)* and Glucose (Glu)*. The Blood Gas analyzer should only be used by healthcare professionals. For in vitro diagnostic use.