File:Mantoux test.jpg

Summary

Licensing

This image is a work of the Centers for Disease Control and Prevention, part of the United States Department of Health and Human Services, taken or made as part of an employee's official duties. As a work of the U.S. federal government, the image is in the public domain. eesti ∙ Deutsch ∙ čeština ∙ español ∙ português ∙ English ∙ français ∙ Nederlands ∙ polski ∙ slovenščina ∙ suomi ∙ македонски ∙ українська ∙ 日本語 ∙ 中文（简体）‎ ∙ 中文（繁體）‎ ∙ العربية ∙ +/−

Original upload log

This is a very misleading picture. In the picture, there appears to be no induration, only erythema (redness). To true/accurate reading of the test would measure ONLY induration, a hard, palpable, usually raised area around the original injection site.