Cartridge Details

chemistries_electrolytes.pngChemistries/Electrolytes  blood_gases-icon.pngBlood Gases
Base Excess (BE)*
CG4+- INTENDED USE (blue cartridge, Part #03P85‑51)
The i-STAT CG4+ cartridge with the i-STAT 1 System is intended for use in the in vitro quantification of pH, PO2, PCO2, and lactate in arterial or venous whole blood in point of care or clinical laboratory settings. pH, PO2 and PCO2 measurements are used in the diagnosis, monitoring, and treatment of respiratory disturbances and metabolic and respiratory-based acid-base disturbances. Lactate measurements are used in (1) the diagnosis and treatment of lactic acidosis in conjunction with measurements of blood acid/base status, (2) monitoring tissue hypoxia and strenuous physical exertion, and (3) diagnosis of hyperlactatemia.




Useful for the diagnosis and treatment of lactic acidosis and hyperlactatemia




Arterial and venous whole blood (see intended use for more information)


CG4+ Blue: 03P85-51

Expected Values

chemistries_electrolytes.pngChemistries/Electrolytes blood_gases-icon.pngBlood Gases
Reportable Range Reference Range (Arterial) Reference Range (Venous)
Lactate 0.30-20.00 mmol/L,
2.7-180.2 mg/dL
0.36-1.25 mmol/L, 3.2-11.3 mg/dL 0.90-1.70 mmol/L, 8.1-15.3 mg/dL
pH 7.00-7.70 7.35-7.45 7.31-7.41
PCO2 15-130 mmHg 35-45 mmHg 41-51 mmHg
PO2 15-530 mmHg 80-105 mmHg  
TCO2* 5-50 mmol/L 23-27 mmol/L 24-29 mmol/L
HCO3* 1.0-85.0 mmol/L 22-26 mmol/L 23-28 mmol/L
Base Excess (BE)* (-30)-(+30) mmol/L (-2)-(+3) mmol/L (-2)-(+3) mmol/L
sO2* 0-100% 95-98%  


About CG4+

With i-STAT CG4+, clinicians may quickly assess the respiratory status of the patient or determine the presence of hyperlactatemia to inform the risk stratification of patients diagnosed with sepsis, all without leaving the patient's bedside.

Serial lactate measurements over the early diagnostic and treatment period can assist in monitoring treatment progress.


Results in ≈2 Minutes

Providing lab-quality results fast when every minute counts.

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