The CAMP test. The CAMP test and a zone of enhanced lysis of erythrocytes. CAMP factor produced by beta-hemolytic streptococci of group B. Presumptive identification of Streptococcus agalactiae.

positive CAMP test, positive CAMP reaction

The CAMP test. Detail of positive CAMP reaction (an arrowhead-shaped zone of complete hemolysis). 24 hours, ambient atmosphere, 37 °C.