Some Notes On Diagnostic Tests For Parasitic Diseases

Parasitical Worms.com Diagnosis of parasites mainly finds parasites. There are 2 methods: direct method and indirect method. So, what is the direct diagnostic testing method and what is the indirect diagnosis? Please discuss with you as follows:
What is the direct way to diagnose parasitic disease?
Direct method to find parasites in the patient's body (adult form, egg, cyst, larva). This method has absolute value when positive

. But there are unacceptable cases (early stage of the disease, immature parasite, too little parasite, too deep parasite location in the body, stray host larvae).
What is the indirect testing method to diagnose parasitic diseases?
The indirect method includes 2 types of tests:
- Positive test, identifying nonspecific changes in the host body, helping to select adaptive biological techniques.
- Specific immunological tests, necessary for cases where direct testing cannot be performed
In addition, information about matters related to the patient is needed:
- The geographical origin of the ill person and the place where they lived, since many parasitic diseases are regionally localized;
- History of the patient in terms of parasites;
- Clinical signs causing patients to come for medical examination;
- The past therapy;
- The blood test results have been performed (blood formula,% of leukocytes calculated ..



.)
- Health condition: immunodeficiency.
Therefore, testers need the cooperation of a clinical physician, not only to select the right technique but also to most effectively analyze the test results.
What are samples and samples for direct diagnostic testing?
This method includes the following tests:
- Feces
- Blood
- Urine
- Bronchial wash water
- Bone marrow aspiration fluid or lymph node
- Biopsy tissue
- Duodenal suction
- Damn
- Leather
Images parasite under the skin
Direct test for fecal parasite infection
Stool examination is a necessary and published method to find the following parasites:
- Unicellular:
+ Types of amoeba
+ The intestinal flagella
+ The intestinal Coccodia
+ Balantidium coli Cordyceps
- Worms:
+ roundworm
+ hookworms
+ hair worms
+ eel worms
+ pinworms (see separate technique)
- Flukes:
+ fluke (liver and intestines)
+ Jackfruit flukes (tapeworm tapeworm)
+ schistosomiasis (except Schistosoma haematobium, see specific technique)
Photos tapeworm flukes
What are the reasons for a physician to decide on a stool test for parasites?
- The presence of clinical symptoms is more or less obvious:
+ Diarrhea or fertilizer
+ Abdominal pain, epigastric pain
+ No gas
+ Nausea, vomiting
+ Pruritus anus
+ Found in feces, there is a general suggestion of a parasite
- The presence of a high percentage of leukemia associated with pulmonary symptoms.
- Testing basic investigations.
What should I be aware of before making a diagnostic test?
In order for the test results to be accurate and truly valuable, patients should be advised:
- Do not eat foods with lots of debris for several days in a row before testing (fruits, vegetables) The residues will interfere with microscopic examination of the parasite
- Do not use drugs that contain Bismuth, coal, kaolin, paraffin oil, besonapthol.
- Do not take x-rays that use contrast, such as barium.
- Stopped the drug to treat parasites.
- Stool for testing to put into a clean and dry vial without sterility.



.
Feces should not be mixed with urine or other substances. Finished stool should be tested immediately. Long-term cells outside the body lose their ability to move and will even be lysed. In the case of faeces that cannot be collected in the laboratory, stool must be applied using a fixed solution (MIF, F2AM, or 10% formol) immediately after collection, then taking the specimen to the laboratory
If the patient is fertilized, a small dose of laxative may be coughed (magnesium sulfate 5g mixed in a little water, taken the night before, the next day to take stool for testing).
Worms, flukes do not lay continuously, the single-cell follicles are not always discharged regularly every day. Therefore, once a negative test does not indicate a true negative value, it needs to be tested for several days in a row. In fact, if prepared carefully, a test twice is enough for the competent laboratory to determine the results
What should be done after a diagnostic test for parasitic diseases?
General: bloody stool of amoeba, foamy stool, yellow-gray color of Giardia, parasites can be seen with the naked eye such as burning tapeworms, pinworms ...



.
Micro: digestive status of starch, meat, bacteria, fungi, red blood cells, white blood cells, epithelial cells…; KST found: what kind, how much, by what techniques (direct screening, enriching ..)
In addition to the usual rich techniques applied to eggs or cysts, there are 2 specific techniques:
- Baermann technique uses a large volume of fertilizer, based on the characteristic that parasite likes high temperature, it is recommended to use water.

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