Blood Gases
Alternate Names : ABG, Arterial Blood Gas Analysis
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How is the Test Performed?
The test is performed by collecting a sample of blood from an artery. Using a small needle, the sample may be collected from the radial artery in the wrist, the femoral artery in the groin, or the brachial artery in the arm.
Before blood is drawn, the circulation to the hand may be tested (if the wrist is the site). After the blood is drawn, pressure must be applied to the puncture site for at least 5 minutes to completely stop the bleeding.
The test must be sent to the laboratory for analysis immediately, or the accuracy of the results cannot be guaranteed.
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