Collection Of Gastrointestinal Tract Specimens

Specimens should be collected and handled in such a manner that they arrive at the laboratory in good condition for the identification of protozoans and helminths. Frequently, intestinal parasites are diagnosed or ruled out based on examination of fecal specimens. However, perianal swabs, liver and duodenal aspirations, or duodenal contents may also be received for examination of intestinal parasites. a. Fresh Specimens. Laboratory and nursing personnel are responsible for instructing the...

Cultivation Of Parasites

The cultivation of parasites has proven to be a beneficial technique in the study of human parasitology. The time, effort, and money spent in these techniques have prevented the methodology from being utilized in the routine medical parasitology laboratory. Teaching institutions have a constant need for study material, and therefore, have more of a need for the procedures enumerated below. a. Boeck and Drbohlav's Medium modified . This is a semi-solid egg-based medium that requires an overlay...

Preservation

Whenever specimens cannot be examined immediately after collection, a portion or the whole sample can be preserved for later examination. This procedure maintains parasites in their existing morphological form and structure. There is no perfect fixative and the method of preservation is usually determined by the particular organism a. Formalin. While protozoan trophozoites are destroyed by formalin, cysts, ova, and larvae are well preserved. The stool specimens should be preserved within one...

Divisions Of Living Organisms

This is a large group of organisms with similar features. In the literature, various authors list from two to five kingdoms. 1 Kingdom PLANTA. This kingdom contains all of the plants. There are no plants parasitic to man. 2 Kingdom PROTISTA. Members of this kingdom are unicellular one-celled organisms. The kingdom is further divided into two subkingdoms. a Subkingdom EUCARYOTA. Eucaryotes are characterized by a nuclear membrane separating the nucleus from the cytoplasm, DNA that is...

Subcourse Md0841 Parasitology I Introduction

Parasitic infection can greatly interfere with a soldier's ability to complete his mission. The presence of parasites in a soldier's system can not only interfere with his ability to function, but also can make him susceptible to certain diseases. Since soldiers may serve in most areas of the world, you must be able to identify parasites that are found in the various parts of the globe. In your job as a medical laboratory specialist, you will perform a variety of test procedures on samples...