Skip directly to site content
Centers for Disease Control and Prevention. CDC twenty four seven. Saving Lives, Protecting People
For a full list of topics:
Public Health Image Library (PHIL)
Created in 1965, this photograph depicts a pneumatic, intradermal delivery system that had been outfitted with a bottle of tuberculin solution for injection, for the screening of tuberculosis. The image was captured during a skin testing project, which took place in Muskogee County, Georgia, and was staged in order to show that fluid remained on the nozzle, and the skin after having implemented this delivery system. The TST is now performed by injecting 0.1 ml of tuberculin purified protein derivative (PPD) into the inner surface of the forearm. The injection should be made with a tuberculin syringe, with the needle bevel facing upward. The TST is an intradermal injection. When placed correctly, the injection should produce a pale elevation of the skin (a wheal) 6 to 10 mm in diameter. See PHIL 6806, for a more modern approach to the administration of this PPD test.
Click here for hi-resolution image (18.35 MB)
CDC/ Dr. Luby
Skip Navigation Links.
Skip Navigation Links.
Analytical, Diagnostic and Therapeutic Techniques and Equipment
Diagnostic Techniques and Procedures
Laboratory Techniques and Procedures
Equipment and Supplies
Chemicals and Drugs
Immunologic and Biological Factors
Bacterial Infections and Mycoses
Gram-Positive Bacterial Infections
Pathological Conditions, Signs and Symptoms
- This image is in the public domain and thus free of any copyright restrictions.
Add to My Pictures
What's New in PHIL
Health Care Providers
Public Relations / Communications
Teachers & Trainers
Photo Librarians & Researchers
Public Health Practitioners
Image ID Search
Get Email Updates
To receive email updates about this page, enter your email address:
Exit Notification / Disclaimer Policy
Links with this icon
indicate that you are leaving the CDC website.
The Centers for Disease Control and Prevention (CDC) cannot attest to the accuracy of a non-federal website.
Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website.
CDC is not responsible for Section 508 compliance (accessibility) on other federal or private website.
For more information on CDC's web notification policies, see