ABSTRACT
Changes in the level of trace elements are associated with some diseases. Studies showed that certain parasitic infections could lead to distribution in the metabolism of some elements leading to cellular damage. Therefore, this work aimed to study the relationship between pathogenic intestinal protozoal infection and the level of some trace metals.100 infected males and 50 controls were subjected to stool and serum examination. The results revealed that infections increased in the young ages, both serum zinc and iron levels were decreased in G. lamblia infected cases aging [20 30 years], but they did not show any changes in E histolytica or mixed inrectioa cases in the same age when compared with their corresponding controls. Also, serum copper level was not affected by both single or mixed infection