How To Take A Stool Sample To Test For Eggs Of Parasitic Worms

Stool examinations are a way to help people find diseases that humans have when infected with helminth parasites. The stool sample is examined under a microscope to see eggs of parasitic worms that cause disease in humans.
COLLECTION AND STORAGE
Fecal samples: There are many methods for taking specimens, deciding which method to use should be based on the value and limitations of each method. If the sample is not collected and handled correctly, we may not be able to detect the pathogen. Here are some guidelines for stool sampling to give the most accurate results

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Collect specimens at the laboratory. Should take the stool at the laboratory is best.
Vial of stool:
Need to be dry and clean, maybe with clear plastic or waterproof or glass carton paper Wide mouth, tight screw cap There are labels to indicate the patient's full name, age and date and time of taking specimen.
How to take stool:
You can take any part of the stool to look for helminth eggs.



. But to detect unicellular, stool should be taken in an abnormal place such as blood, mucus, liquid, foam or stool in the rectum.
Do not mix urine, oil, Mg, Al, Ba salts ... because these substances deform the unicellular
If the patient is given medication, only sulfatnatri should be given and the stool will be taken when the patient goes out for a second or fourth time when taking the medication
The amount of stool to take:
Varies depending on the purpose and testing technique, usually only need 5-10g of stool (about the size of a grain) to be able to do many methods.
In some cases such as finding worms, burning tapeworms, gastrointestinal diseases, the entire amount of excreta is removed.
In addition to the laboratory
It is undesirable to take stool from outside the laboratory, so keep the following guidelines in mind:
It should be sent to the laboratory as soon as possible, especially unicellular, with feces always kept warm.
Do not keep in temperatures too cold.



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If far away, keep the vial of stool in warm water about 37 ° C.
Stool test time
After the recall of specimens, the testing should be carried out immediately as soon as possible.
Normal stool should be tested within 12-24 hours or maybe 1-2 days, but must be stored in the refrigerator.
Soft, loose or mucous mucus and blood should be seen within 30 minutes of collection
In case, after collecting faeces but not being able to dissect faeces immediately or take feces at distant home, it is advisable to preserve the feces by leaving fecal samples in fixative solutions so that helminth eggs do not develop, unicellular degenerates and preserves the parasite's shape.
Chemical preservation stool
To preserve the shape and prevent the development of eggs and larvae of worms, tapeworms and faeces, they are stored in preservatives immediately after collection or when the laboratory receives samples.
Some of the preferred fixings are: farmol, sodium, ...
Because each fixant has its own nature, when choosing the fixation method, make sure that the fixant chosen in accordance with the testing technique will refresh the desired result.



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Follow the guidelines to get the most accurate test results.
KTV HUYNH HUONG.

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