Test Overview
Abbott I-Stat - ion selective potentiometry
Performed at authorized locations by point of care operators. Includes pH, pCO2, pO2, and HCO3. Abnormal arterial pH and blood gases are used to determine ventilator parameters and to assess the effectiveness of drug therapies including the administration of supplemental oxygen.
Analyte specific reference ranges are available in the i-Stat test procedure located on the POC website: https://www.pathology.med.umich.edu/point-of-care.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
•Prolonged tourniquet application and forearm exercise may decrease pH due to localized production of lactic acid.
•Exposure of sample to air will cause an increase in pH , a decrease in pCO2 and increase in pO2.
•Results may be affected in the following situations: hemolysis, traumatic draw, pumping fist during draw, extended delay between drawing and testing thee specimen.
Test Details
2 minutes
Specimen Requirements
Collect in heparin syringe/tube.
Samples must be tested within 30 minutes of collection and immediately after exposing the sample to room air.
Additional Information
For more test specific information, please refer to the test procedure found on the Michigan Medicine POC website: https://www.pathology.med.umich.edu/point-of-care.