The GEM Premier 4000 blood gas analyzer provides quantitative measurements of whole blood pH, pCO₂, pO₂, Na⁺, K⁺, ICA⁺⁺, glucose, lactate, hematocrit, and co-oximetry. It has a throughput of 30 samples/hour and features intelligent quality management for real-time, automatic error detection, correction and documentation of all corrective actions.