PPD: what to expect

The test site (usually the forearm) is cleansed with rubbing alcohol. The PPD extract is then injected under the top layer of skin, causing a welt to form on the skin. This welt usually goes away in a few hours.

 

The reaction will take 48 - 72 hours to develop. You must return to your health care provider within that time to have the area checked. This test will determine whether you have had a significant reaction to the PPD test. The reaction is measured in millimeters of firm swelling), not redness, at the site.

 

Chest x-ray: what to expect

Chest X-rays can reveal fluid in your lungs or in the spaces surrounding your lungs, enlargement of your heart, pneumonia, emphysema, cancer and many other conditions.

In the past, the X-ray was printed out on film. Now, almost all chest X-rays are digital files that are viewed and stored electronically.
 
A chest X-ray can show:

    * The condition of your lungs
    * Heart-related lung problems
    * The size and outline of your heart
    * Blood vessels
    * Calcium deposits

During the procedure, your body is positioned between the X-ray camera and the X-ray digital recorder. You may be asked to move into different positions or angles in order to take views from both the front and the sides of your chest.


Having X-rays taken is generally painless. You don't feel any sensation as the X-ray passes through your body. If you have trouble standing, you may be able to have X-rays while seated or lying down.

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