Test directory: i-STAT Blood Gas, Arterial

Ordering Code 8524
Test Name i-STAT Blood Gas, Arterial
Preferred Specimen Arterial Whole Blood
Preferred Container Heparinized Syringe, Lithium Heparin tube
Collection Instructions Heparinized Syringe: Avoid contamination by air, immediately remove all air bubbles from the syringe after drawing the sample
Lithium Heparin tube: Draw full tube.
Handling Instructions Test sample immediately
Specimen Stability 3 Minutes
Rejection Criteria Clotted, Specimen older than stability limits
Avail. Stat NO
Methodology Potentiometry for pH and pCO2, Amperometric for pO2

Reference range(s)

The reference ranges listed below are valid on this date of March 14, 2026.
Component Age Male Norm Male Critical Low Male Critical High Female Norm Female Critical High Female Critical Low Units Add'l info
Source ALL See report.
pH, Arterial ALL 7.35-7.45 <= 7.20 >= 7.55 7.35-7.45 >= 7.55 <= 7.20
pCO2, Arterial ALL 35-45 <= 20 >= 70 35-45 >= 70 <= 20 mmHg
pO2, Arterial ALL 80-105 <= 40 80-105 <= 40 mmHg
Base Excess, Arterial ALL (-2)-(3) (-2)-(3) mmol/L
Bicarbonate, Arterial ALL 22-26 22-26 mmol/L
O2 Sat (Calc), Arterial ALL 95-98 95-98 %
Temp (Pt) ALL F See report.
FIO2 ALL % See report.
Route ALL See report.
Mode ALL See report.
Set Rate ALL Br/min. See report.
PEEP/CPAP/EPAP ALL cmH2O See report.
VT ALL mL See report.
Press. Support/IPAP ALL cmH2O See report.
Insp. Pressure ALL cmH2O See report.
O2 Liter Flow ALL LPM See report.
pO2/FIO2 Ratio ALL See report.