Trichinella spiralis IgG Ab

Trichinella spiralis is a nematode (roundworm) that can cause a disease known as trichinellosis. This disease is most commonly transmitted by consuming raw or undercooked meat from infected animals, especially pigs. The Trichinella spiralis IgG Ab test belongs to a group of tests called parasitological serology. It detects antibodies (IgG) against this parasitic infection in the patient’s blood.

Where is the test performed?

You can have this test done at the IntroLab laboratory in Belgrade. The process involves drawing blood from a vein, after which the sample is sent for further processing to detect specific antibodies.

Why is this test performed?

This test is recommended for individuals who have consumed meat suspected to be contaminated, as well as those who show symptoms of trichinellosis. It can also be used to monitor treatment effectiveness or confirm a diagnosis.

How is Trichinella spiralis infection transmitted?

Infection with Trichinella spiralis occurs by ingesting meat that contains Trichinella cysts. After exposure to stomach acid and pepsin, the larvae are released from the cysts and invade the mucosa of the small intestine, where they develop into adult worms. After about a week, the females release larvae that migrate to striated muscles, where they become encapsulated. The encapsulation process is completed in 4 to 5 weeks, and the encapsulated larvae can remain viable for several years. By ingesting encapsulated larvae, the cycle continues.

Symptoms of infection

Milder cases are typically asymptomatic. In mild to moderate infections, most symptoms resolve within a few months. However, fatigue, weakness, and diarrhea may persist for months. In severe cases, death may occur.

Where is Trichinella spiralis infection most common?

Trichinella spiralis infection is present worldwide but is most common in parts of Europe and the United States.

How is the infection diagnosed?

The infection can be identified in several ways:

• Microscopy
• Muscle biopsy
• Serology: Detection of antibodies using the ELISA test

Preventive measures

Preventing Trichinella spiralis infection requires careful measures at both individual and communal levels. Here are some key steps you can take to reduce the risk of infection:

• Thoroughly cook meat, especially pork. Meat should be cooked until it reaches an internal temperature of at least 71°C (160°F). This will ensure that all Trichinella spiralis larvae in the meat are destroyed.
• Never consume raw or undercooked meat, especially pork or game meat.
• Freezing meat can help destroy the larvae. Frozen meat at -15°C (5°F) or lower for at least 3 weeks is recommended.
• Purchase meat only from verified and reliable suppliers. Game meat, especially from bears, can be a source of infection, so it’s important that such meat is thoroughly cooked or frozen before consumption.
• Wash your hands with soap and water before eating and after handling raw meat. It’s also important to regularly clean and disinfect surfaces where food is prepared.
• Be cautious when traveling to areas known to have a high risk of T. spiralis infection, especially when consuming meat.

Course of treatment

Once the diagnosis of infection is established, treatment begins, which may include:

• Antiparasitic medications: In the early stage of infection, when the larvae are still in the intestines, treatment with antiparasitic drugs such as mebendazole or albendazole can be effective. These medications work by killing adult worms and preventing further release of larvae.
• Corticosteroids: In cases where the infection causes severe symptoms, such as muscle pain or inflammation of the heart muscle, corticosteroids may be prescribed to reduce inflammation and alleviate symptoms.
• Symptomatic treatment: Depending on the symptoms, symptomatic treatment may be necessary, such as analgesics for pain or medications to reduce swelling.
• Prevention of complications: In severe cases where the infection causes complications like myocarditis (inflammation of the heart muscle) or encephalitis (inflammation of the brain), hospitalization and intensive care may be required.
• Monitoring and follow-up examinations: After the initial treatment, it’s important to regularly monitor the patient to ensure that all symptoms have resolved and that there are no complications.

Subtypes of the Trichinella spiralis IgG antibody test

In addition to the Trichinella spiralis IgG antibody test, you can also perform the Trichinella spiralis total Ab test at the IntroLab laboratory.