Laboratory tests help to most accurately detect the presence of parasites in the human body.Most often, blood and stool samples are needed to test for worms.
Each of the modern methods has its advantages and disadvantages.For this reason, doctors recommend doing a comprehensive examination of the body to find out if there are worms.
A stool test for parasites shows the presence of helminth larvae and eggs.However, test results do not always make it possible to make an accurate diagnosis.
This fact can be explained by the fact that worms have several specific development phases;they can live and parasitize in different parts of the digestive system.In order to achieve the most accurate results, stool must be donated at least 3 times a week.
If blood samples are indicated, they will reveal antibodies that appear as a result of the human body's reaction to the toxins secreted by the worms.Given that around 150 species of parasites live in the human body today, no research method can be 100% accurate.
Are there worms or not?
Everyone knows that the main indicators, on the basis of which the presence of parasites is suspected:
- excessive thinness of a person against the background of increased appetite;
- abdominal pain after eating;
- attacks of morning sickness.
Such symptoms make it possible to simply suspect that there are worms at home, but an accurate diagnosis can be made after diagnosing the body and performing parasite tests.These signs can indicate pathologies of the digestive system, metabolic disorders and other diseases.
In the case of worms, the symptoms are as follows: bloating, periodic discomfort in the abdominal cavity, stool disorder (diarrhea, constipation), you may experience heartburn after eating, this could be a worm in the stomach.
Many people, after discovering the signs of a parasite infection, immediately start taking all kinds of drugs and switch to a gentle diet.In the vast majority of cases, such measures are useless, and sometimes even cause harm.Before starting treatment, the presence of worms should be checked, especially if the following symptoms have appeared:
- discomfort near the anus;
- reduced immunity, frequent colds;
- skin rashes (urticaria), inflammation (boils);
- constant cough that does not go away even after treatment.
Parasites can negatively affect the functioning of the central nervous system.The signs prove this: excessive nervousness, irritability, fatigue.
When to give blood
A blood test for the presence of worms is performed when a person is bothered by headaches, skin problems, itching around the anus, insomnia, digestive disorders (diarrhea, mucus in the stool, constipation).In case of parasitic infection, the patient notices excessive fragility of the nails and hair loss.
If a child is sick, their symptoms may appear differently.In addition to these signs, strong secretion of saliva, increased appetite and lack of concentration.
Therefore, a blood test for the presence of worm antigens is an important diagnostic measure that detects parasites in the body and determines the disease as early as possible.There is an opinion that it is enough to give a stool sample to establish a diagnosis, but this is not the case.Blood tests are rarely performed because patients do not want to waste their time and money.
Not everyone knows that eggs in feces can only be detected in the case of worms
- filled the bowels;
- they are actively developing;
- they multiply.
A blood test for worms in adults can detect infection at a very early stage.To carry out such an analysis, blood must be taken from the cubital vein, which allows you to accurately and quickly determine the parasites and choose ways to get rid of them.
Blood sampling is also required if worm infection is suspected, if worm infection is detected in domestic animals, for epidemiological diagnostic measures in a given region.A person should be tested for worms if the level of leukocytes in the blood is elevated, which does not indicate other pathological conditions.
Routine examinations are sometimes performed on persons whose professional activities are closely related to an increased risk of parasite infection;usually belongs to this group:
- employees of meat processing plants;
- farmers;
- veterinarians.
It is necessary to determine the presence of antibodies against parasites in the case of fibroids, adrenal glands, bladder and kidney inflammation in women.Men are recommended to have a blood test for prostatitis, adenoma and impotence.
A proven sign that there may be worms in the body is indigestion.In this case, the blood test is performed for both men and women.
Stool analysis
To achieve an accurate result, the patient must follow clear rules.So, 1 week before the analysis, you should stop taking antiparasitic, antidiarrheal and antibacterial drugs, castor and mineral oil.
If the colon examination is not planned (irrigoscopic procedure), blood donation is permitted no later than 2 weeks after the stool examination.You should know that the container containing the substance should not be stored at temperatures above zero.It is optimally 4-8 degrees for more than 8 hours.
Examination of feces for protozoan parasites is carried out as follows:
- take 2 teaspoons of stool;
- transfer to a clean, dry container;
- cover with a lid.
Ideally, material should be taken from different parts of the stool.For an accurate answer, the stool is collected no later than half an hour after the stool, and the container is immediately transported to the laboratory.
It is important to make patients aware that a single test is not always sufficient to identify worms in humans, especially for fungal and roundworm eggs.Accordingly, the analysis is repeated at least 3 times with a frequency of 1-2 days.
How to submit the scraping
Before you check for the presence of worms by scraping, you need to familiarize yourself with the basic rules of the procedure.First of all, it is forbidden to wash the area around the anus, as this destroys traces of parasites.For the most accurate results, it is equally important not to empty the bowels before scraping.
Worm scrapings are taken in a laboratory or clinic, but worms can also be detected at home.It is recommended to wear medical gloves before sampling.
If there is an assumption about the development of enterobiasis, it is better to use a special test tube with a long stick inside.The end of this rod should be wrapped with cotton wool and then carefully soaked:
- glycerol;
- distilled water;
- salt solution.
The procedure is quite simple and does not require much effort.The container is opened, a stick with cotton wool is taken, the bottom is spread, and then the stick is guided around the anus.
The rod containing the resulting biological material is placed back into the container so that it does not touch its wall, and the container is closed.
The test result will be reliable if the sample of biological material is delivered to the laboratory as soon as possible.
You can determine the presence of parasites by yourself in other ways, for example, using a glass plate with special adhesive tape.
Doctors insist that the analysis technology must be done accurately.So first you need to peel off the sticker from the glass plate and apply it to the skin around the anus for a few seconds and spread your bottom before doing this.After which:
- the tape is again attached to the glass plate;
- the material is taken to the health facility where the research is conducted.
There is another equally important rule: during the collection of biological material, it is forbidden to touch the tape and glass with foreign objects.In addition, the analysis should not be stored in a refrigerator, as this greatly affects the result and reliability of the test.
Nowadays, it is possible to test for the presence of parasitic infection by giving a saliva sample.The test is simple and does not require prior preparation from the patient.They take a disposable container and special reagents that allow the identification of the 11 most common types of helminths.
The method has both advantages and obvious disadvantages, for example, the test is supported by the ability to detect the presence of worms in all tissues of the body, and the negative side of the procedure is the rather high cost of the test.