Laboratory tests help to most accurately demonstrate the presence of parasites in the human body.Most often, blood and stool samples are required to test for worms.
Each of the modern methods has both its disadvantages and advantages.For this reason, doctors recommend conducting a comprehensive examination of the body to find out whether a person has worms.
A stool test for parasites will show the presence of helminth larvae and eggs.However, test results do not always allow an accurate diagnosis to be made.
This fact is explained by the fact that worms have several specific developmental phases; they can live and parasitize in various parts of the digestive tract.To obtain the most accurate result, you need to donate stool at least 3 times a week.
If a study of blood samples is indicated, they will reveal antibodies that appear as a result of the human body’s reaction to toxins secreted by worms.Due to the fact that today there are about 150 species of parasites living in the human body, 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 will allow you to simply suspect that you have worms at home, but an accurate diagnosis can be made after undergoing diagnostics of the body and taking tests for parasites.These signs may indicate pathologies of the digestive tract, metabolic disorders, and other diseases.
If you have worms, the symptoms will be the following: bloating, periodic discomfort in the abdominal cavity, stool upset (diarrhea, constipation), after eating you may experience heaviness in the stomach, this could be worms in the stomach.
Many people, after discovering signs of parasitic infestation, immediately begin to take all kinds of medications and switch to a gentle diet.In the vast majority of cases, such measures will be useless, sometimes even causing harm.Before starting treatment, you need to be tested for worms, especially if the following symptoms have occurred:
- discomfort near the anus;
- decreased immunity, frequent colds;
- rashes on the skin (urticaria), inflammation (boils);
- constant coughing, it does not go away even after treatment.
Parasites can negatively affect the functioning of the central nervous system.This is evidenced by signs: excessive nervousness, irritability, fatigue.
When to donate blood
Blood testing for the presence of worms is carried out if a person is bothered by headaches, skin problems, itching around the anus, insomnia, digestive disorders (diarrhea, mucus in the stool, constipation).With a parasitic infestation, the patient will notice excessive brittleness of the nails and hair loss.
If a child is sick, their symptoms may appear differently.In addition to these signs, there is a powerful secretion of saliva, an increase in appetite, and a lack of concentration.
Therefore, a blood test for the presence of antigens to worms is an important diagnostic measure that will detect parasites in the body and determine the disease as early as possible.There is an opinion that to make a diagnosis it is enough to provide only stool samples, but this is not so.Blood tests are rarely done because patients do not want to waste their time and money.
Not everyone knows that eggs in feces can only be detected if worms
- filled the intestines;
- are actively developing;
- multiply.
A blood test for worms in adults will show infestation at a very early stage.To carry out such an analysis, you should take blood from the cubital vein, which will allow you to accurately and quickly determine the type of parasites and choose ways to get rid of them.
Blood sampling is also necessary if there is a suspicion of infection with worms, when helminths are detected in domestic animals, for carrying out epidemiological diagnostic measures in a specific region.It is necessary to check whether a person has worms if the level of blood leukocytes is elevated, which does not indicate other pathological conditions.
Sometimes routine examinations are carried out for people whose professional activities are closely related to an increased risk of parasitic infection; as a rule, this group includes:
- meat processing plant workers;
- farmers;
- veterinarians.
Determining the presence of antibodies to parasites is required for fibroids, an inflammatory process in the adrenal glands, bladder, and kidneys in women.Men are advised to have a blood test for prostatitis, adenoma, and impotence.
A proven sign that worms may exist in the body is indigestion.In this case, blood testing is carried out for both men and women.
Stool analysis
To obtain an accurate result, the patient must follow clear rules.So, 1 week before the analysis, you need to stop taking antiparasitic, antidiarrheal and antibacterial medications, castor and mineral oil.
When an examination of the large intestine is not scheduled (irrigoscopy procedure), blood donation is allowed no later than 2 weeks after the stool test.You should know that the container with the material must not be stored at above-zero temperatures.Optimally, it is 4-8 degrees for no longer than 8 hours.
Testing stool for protozoan parasites is carried out as follows:
- take 2 teaspoons of feces;
- transfer to a clean, dry container;
- cover with a lid.
Ideally, you need to take material from different parts of the stool.To get an accurate answer, feces are collected no later than half an hour after defecation, and the jar is immediately delivered to the laboratory.
It is important to draw the attention of patients that a single test to identify worms in humans is not always enough, especially for pinworm and roundworm eggs.Accordingly, the analysis is repeated at least 3 times with a frequency of 1-2 days.
How to submit a scraping
Before checking for the presence of worms using 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 will destroy traces of parasites.To obtain the most accurate result, it is equally important not to empty your intestines before taking a scraping.
Scrapings for worms are taken in a laboratory or in a clinic, but worms can also be detected at home.It is recommended to wear medical gloves before taking a sample.
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 stick will need to be wrapped with cotton wool, and then carefully soaked:
- glycerin;
- distilled water;
- saline solution.
The procedure is quite simple and does not require much effort.The container is opened, a stick with cotton is taken, the buttocks are spread apart, and then the rod is passed around the anus.
The rod with the obtained biological material is placed back into the container, trying not to touch its walls, and the container is closed.
The result of the study 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 in yourself in another way, for example, using a glass slide with special adhesive tape.
Doctors insist that the analysis technology must be performed exactly.So, first you need to peel off the sticker from the glass slide, apply it to the skin around the anus for a couple of seconds, spreading the buttocks before doing this.After which:
- the tape is again attached to the glass slide;
- the material is taken to the medical institution where the research will be carried out.
There is another equally important rule: when collecting biological material, it is prohibited to touch the tape and glass with foreign objects.Also, you should not store the analysis in the refrigerator, as this will greatly affect the result and reliability of the study.
Nowadays, it is possible to test for the presence of a parasitic infection by giving a saliva sample.The test is simple and does not require any prior preparation from the patient.They take a disposable container and special reagents that allow you to identify the 11 most common types of helminths.
The method has 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 fairly high cost of the study.