Laboratory tests help to detect the presence of parasites in the human body as accurately as possible.Blood and stool samples are usually required to test for worms.
Each of the modern methods has both its disadvantages and its advantages.For this reason, doctors recommend a comprehensive examination of the body to find out whether a person has worms.
A stool test for parasites shows the presence of helminth larvae and eggs.However, the test results do not always allow an accurate diagnosis.
This fact is explained by the fact that worms have several specific phases of development;They can live and parasitize in different parts of the digestive tract.To get the most accurate result, you need to donate stool at least three times a week.
When examination of blood samples is indicated, antibodies are detected that arise as a result of the human body's reaction to toxins secreted by worms.Due to the fact that about 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 based on which the presence of parasites is suspected:
- excessive thinness of a person against the background of increased appetite;
- stomach pain after eating;
- Attacks of morning sickness.
Such symptoms simply make you suspect that you have worms at home.However, an accurate diagnosis can be made after body diagnostics and tests for parasites.These signs may indicate diseases of the digestive tract, metabolic disorders and other diseases.
If you have worms, the following symptoms occur: flatulence, periodic discomfort in the abdominal cavity, upset stools (diarrhea, constipation), there may be a feeling of heaviness in the stomach after eating, this could be worms in the stomach.
Many people, after noticing signs of a parasite infestation, immediately start taking all sorts of medications and switch to a gentle diet.In the vast majority of cases, such measures are useless and sometimes even cause harm.Before starting treatment, you must be tested for worms, 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.This is evidenced by signs: excessive nervousness, irritability, fatigue.
When to donate blood?
A blood test for the presence of worms is carried out if a person suffers from headaches, skin problems, itching in the anus area, insomnia or digestive disorders (diarrhea, mucus in stools, constipation).When infected with parasites, the patient notices excessive nail brittleness and hair loss.
When a child is sick, the symptoms may look different.These signs include heavy saliva secretion, increased appetite and lack of concentration.
Therefore, a blood test for the presence of antigens against worms is an important diagnostic measure to detect parasites in the body and detect the disease as early as possible.There is an opinion that for diagnosis it is enough to simply take stool samples, but this is not the case.Blood tests are rarely done because patients don't want to waste time or money.
Not everyone knows that eggs in feces can only be detected in worms
- filled the bowels;
- develop actively;
- multiply.
A blood test for worms in adults shows an infestation at a very early stage.To carry out such an analysis, you should take blood from the cubital vein in order to accurately and quickly determine the type of parasites and choose ways to eliminate them.
Blood sampling is also necessary if worm infestation is suspected, if helminths are detected in pets and to carry out epidemiological diagnostic measures in a certain region.It is necessary to check whether a person has worms if the level of blood leukocytes is increased, which does not indicate other pathological conditions.
Sometimes routine examinations are carried out on people whose occupational activities are closely related to an increased risk of parasitic infection;This group usually includes:
- workers in meat processing plants;
- farmers;
- Veterinarians.
In fibroids, an inflammatory process in the adrenal glands, bladder and kidneys in women, determining the presence of antibodies to parasites is necessary.Men are recommended to have a blood test for prostatitis, adenoma and impotence.
A proven sign that worms may be present in the body is indigestion.In this case, a blood test is performed on both men and women.
Stool analysis
To get an accurate result, the patient must follow clear rules.Therefore, a week before the analysis, you need to stop taking antiparasitic, antidiarrheal and antibacterial drugs, as well as castor and mineral oil.
If an examination of the colon is not planned (irrigoscopy), blood donation is permitted no later than 2 weeks after the stool examination.You should know that the container with the material cannot be stored at temperatures above zero.A maximum of 8 hours at 4-8 degrees is optimal.
Stool examination 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 chair.To obtain an accurate answer, the feces are collected no later than half an hour after a bowel movement and the vessel is immediately delivered to the laboratory.
It is important to make patients aware that a single test is not always sufficient to identify worms in humans, especially pinworm eggs and roundworm eggs.Accordingly, the analysis is repeated at least three times with an interval of 1-2 days.
How to submit a scrape
Before checking 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.In order to obtain the most accurate result, it is also important not to empty the intestines before a curettage.
Deworming treatments are carried out in a laboratory or clinic, but worms can also be detected at home.It is recommended to wear medical gloves before collecting samples.
If there is a suspicion that enterobiasis is developing, it is better to use a special test tube with a long rod in it.The end of this stick must 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 removed, the buttocks are spread and then the stick is passed around the anus.
The rod with the obtained biological material is placed back into the container, being careful 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 on yourself in other ways, for example, using a microscope slide with special tape.
Doctors insist that the analysis technique must be carried out precisely.So first you need to peel the sticker off the slide, apply it to the skin around the anus for a few seconds, spreading the buttocks before doing this.Thereafter:
- the tape is reattached to the slide;
- The material is taken to the medical facility where the research will be conducted.
There is another, equally important rule: when collecting biological material, it is forbidden to touch the tape and glass with foreign objects.In addition, you should not store the analysis in the refrigerator, as this greatly affects the result and reliability of the study.
Nowadays it is possible to determine whether a parasitic infection is present by providing a saliva sample.The test is simple and does not require prior preparation of the patient.You will need a disposable container and special reagents that allow you to identify the 11 most common species 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 relatively high cost of the study.