Mix/Central Venous O2 Sat

Test Code

CPT Codes

Preferred Specimen

Whole Blood: Heparinzed syringe

Minimum Volume
1 ml

Transport Container

Heparinized syringe

Transport Temperature
Room temperature or in slushed ice

Specimen Stability
30 minutes at room temperature, 1 hour in slushed ice

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Heparinzed green top tube, clotted specimen

Potentiometric and Amperometric

Report Available
Upon completion of analysis

Reference Range

> 69%

Clinical Significance

Mixed venous O2 Sat is drawn from a pulmonary artery catheter (a swan ganz catheter) and includes all of the mixed venous blood returning from the head and arms, gut and lower extremities and coronary veins. It measures the O2 delivery and consumption in the blood returning to the right side of the heart. It also captures the blood before it is re-oxygenated in the pulmonary capillary.

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.