Laboratory tests help to demonstrate with greater precision the presence of parasites in the human body.Most often, blood and stool samples are needed to test for the presence of worms.
Each of the modern methods has disadvantages and advantages.For this reason, doctors recommend carrying out a complete examination of the body to find out if 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 for an accurate diagnosis.
This fact is explained by the fact that worms present several specific stages of development;they can live and parasitize in various parts of the digestive tract.To get the most accurate result, you need to donate feces 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 the 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 based on 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.
These symptoms will allow you to simply suspect that you have worms at home, but an accurate diagnosis can be made after diagnosing the body and testing for parasites.These signs may indicate pathologies of the digestive tract, metabolic disorders and other diseases.
If you have worms, the symptoms will be as follows: bloating, periodic discomfort in the abdominal cavity, stool disorders (diarrhea, constipation), after eating you may feel heaviness in the stomach, it could be worms in the stomach.
Many people, upon discovering signs of parasitic infestation, immediately begin taking all types of medications and adopting a moderate diet.In the vast majority of cases, such measures will be useless, sometimes even causing damage.Before starting treatment, you need to do a worm test, especially if the following symptoms occur:
- discomfort near the anus;
- decreased immunity, frequent colds;
- skin rashes (hives), inflammation (boils);
- constant cough, which 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
A blood test to detect the presence of worms is carried out if a person is bothered by headaches, skin problems, itching in the anus, insomnia, digestive disorders (diarrhea, mucus in the stool, constipation).With a parasitic infestation, the patient will notice excessive nail fragility and hair loss.
If a child is sick, symptoms may appear differently.In addition to these signs, there is strong saliva secretion, increased appetite and lack of concentration.
Therefore, a blood test to detect the presence of worm antigens 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 the case.Blood tests are rarely done because patients don't want to waste time and money.
Not everyone knows that eggs in feces can only be detected if the 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 must collect 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 collection is also necessary if worm infection is suspected, when helminths are detected in domestic animals, to carry out epidemiological diagnostic measures in a specific region.It is necessary to check whether a person has worms if the level of leukocytes in the blood 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 against parasites is necessary for fibroids, an inflammatory process in the adrenal glands, bladder and kidneys in women.Men are advised to have blood tests for prostatitis, adenoma and impotence.
A proven sign that there may be worms in the body is indigestion.In this case, blood tests are carried out for both men and women.
Stool analysis
To obtain an accurate result, the patient must follow clear rules.Therefore, 1 week before the analysis, it is necessary to stop taking antiparasitic, antidiarrheal and antibacterial drugs, castor and mineral oil.
When an examination of the large intestine (irrigoscopy procedure) is not scheduled, blood donation is permitted a maximum of 2 weeks after the stool examination.You should know that the container with the material should not be stored at temperatures above freezing.Ideally, it is 4 to 8 degrees for a maximum of 8 hours.
Stool testing for protozoan parasites is performed 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 bench.To obtain an accurate answer, feces are collected no later than half an hour after defecation and the vial is immediately delivered to the laboratory.
It is important to draw patients' attention to the fact that a single test to identify worms in humans is not always sufficient, especially for pinworm and roundworm eggs.Thus, the analysis is repeated at least 3 times with a frequency of 1-2 days.
How to submit a scrape
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 a more accurate result, it is equally important not to empty the intestines before scraping.
Scrapings for worms are done in a laboratory or 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 tip 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 cotton swab is removed, the buttocks are spread apart and the swab is passed around the anus.
The rod with the obtained biological material is placed back in 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 quickly as possible.
You can determine the presence of parasites yourself in another way, for example, using a glass slide with special adhesive tape.
Doctors insist that the analysis technology must be carried out accurately.So, first you need to remove the sticker from the glass slide, apply it to the skin around the anus for a few seconds, spreading it across the buttocks before doing so.After that:
- the tape is fixed to the glass slide again;
- 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, do 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 collecting a saliva sample.The test is simple and does not require any prior preparation from the patient.They use a disposable container and special reagents that allow you to identify the 11 most common types of helminths.
The method has obvious advantages and 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 study.