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Green tea does contain caffeine. An 8-ounce serving of brewed green tea can contain 24 to 45 milligrams of caffeine. However, other types of teas and coffee can have a higher quantity of caffeine.


Green tea does contain caffeine and, in some cases, contains more caffeine than the same amount of black tea. Even decaffeinated green tea contains a small amount of caffeine.


All true tea leaves from the Camellia sinensis tree, including black, green, oolong and white varieties, contain 30 to 90 milligrams of caffeine per 8-ounce cup. Even decaffeinated teas contain 1 to 20 percent of the tea's original caffeine content.


As of 2014, Arizona green tea has 7.5 milligrams of caffeine per 8-ounce serving. All Arizona teas contain caffeine, are gluten free and can be served hot.


White tea does have caffeine. However, at just 30 to 55 milligrams of caffeine per 8-ounce cup, it contains much less than a cup of black tea, which can contain 60 to 90 milligrams of caffeine, according to Choice Organic Teas.


Black tea does contain caffeine. An 8-ounce serving of black tea contains between 14 and 70 milligrams of caffeine. Decaffeinated black tea may contain up to 12 milligrams of caffeine per 8-ounce serving.


Black tea may have 14 to 70 milligrams of caffeine per 8-ounce serving. However, decaffeinated black tea has 12 milligrams of caffeine or less per 8-ounce serving. The average amount of caffeine in an 8-ounce serving of black tea is 47 milligrams, according to the U.S. ...