When collecting a stool specimen, what is the correct method?

Using a tongue blade to transfer 2 tablespoons of feces to the specimen container is the correct method because it helps ensure that the stool specimen is collected in a clean and controlled manner, minimizing contamination. A tongue blade allows for careful manipulation and transfer of the stool, which is important for maintaining the integrity of the sample.

This method also ensures that an adequate amount of stool is collected, which is often necessary for accurate testing. Different tests may require a specific volume to ensure reliable results, so using a tool that allows for precise measurement, such as a tongue blade, is beneficial.

In comparison, other methods such as scooping with a spoon or collecting directly into a container without tools could introduce bacteria or other contaminants, affecting the specimen's quality. Mixing stool with water before transferring can also compromise the sample's integrity, depending on the type of tests being performed, as it might alter the natural properties of the stool.