Venous Blood Gas Analysis Overview

Venous blood gas test is a common alternative of an arterial blood gas (ABG) analysis used in cases where an arterial tap is not possible. A venous blood gas test is used by doctors to test the systemic carbon dioxide tension and pH balance of the blood.

Most commonly this test is used in intensive care units and emergency rooms at a hospital to assess the status of a patient going through a medical emergency.

Any movement in the patient during the sample collection or the pain associated with arterial blood gas tests makes it difficult in various medical situations. Venous blood gas test is more convenient in such situations offering doctors the necessary information without the problems associated with ABG.

When Is A Venous Blood Gas Analysis Prescribed?

A venous blood gas analysis is prescribed by doctors to get an understanding of the patient’s oxygen, carbon dioxide, and pH levels in the blood. This test is used in emergency medical situations where doctors urgently need the test results to understand the patient’s medical status. Here are some of the situations where doctors prescribe a venous blood gas test.

When a patient is in an intensive care unit.
When a patient has been rushed into the emergency unit of a hospital
For younger patients who can’t go through an arterial blood gas analysis
When a patient has chronic respiratory troubles
When a patient is undergoing surgery

Components of Venous Blood Gas Analysis

There are two main components of a venous blood gas test with doctors also using other parameters to get a complete profile of gas levels in your blood. Here is a complete list of the main components of this test.

pH of blood: The normal pH range of venous blood is between 7.32 to 7.43.

Partial pressure of Carbon dioxide: The normal range of partial pressure of carbon dioxide in venous blood is between 35 to 45 mm Hg.

Bicarbonate: The normal range of bicarbonate in blood is 22 to 27 mmol/L.

Partial pressure of Oxygen: The normal range of partial pressure of oxygen in blood is 30 to 55 mm Hg.
Oxygen saturation: which is a measure of the amount of oxygen being carried by thehemoglobin in the red blood cells.

Procedure And Prerequisites

A venous blood gas test is performed by drawing blood from the veins of a patient and sending it for testing. As a prerequisite there are certain steps doctors need to follow before the sample can be sent for testing. The sample needs to be collected in a Pre-Heparinized (1000 IU/ML) Disposable Syringe and Needle. Doctors must ensure there are no air bubbles in the sample and mix the sample gently ten times specifically. Once this is complete, the sample must be secured with a rubber stopper and sent for testing.

Venous Blood Gas Analysis in Idukky

Venous Blood Gas Analysis in Idukky

B0047

Daily

Venous Blood in A Pre-Heparinised (1000 IU/ML) Disposable Syringe and Needle Avoid Air Bubbles Mix Gently 10 Times Seal Needle with Rubber Stopper

24 Hours

₹800

Parameters

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