4029. Giardia, antigen in feces (qualitative determination)

The test detects Giardia lamblia antigens – specific protein components of the parasite – in feces. The presence of antigens indicates active intestinal infestation by Giardia lamblia.

Giardia lamblia is a single-celled parasite that causes a disease known as giardiasis. The parasite colonizes the small intestine, disrupting its function. Infection occurs through the fecal-oral route – through consumption of water or food contaminated with giardia cysts, or through contact with infected people or animals.

Manifestations usually appear 1-3 weeks after infection. Symptoms of giardiasis range from asymptomatic carriage to severe gastrointestinal disturbances:

• diarrhea (stools vary from watery to harder, may be profuse, foul-smelling, and discolored);
• paroxysmal epigastric pain;
• bloating, nausea, loss of appetite;
• fatigue, and allergic reactions.

Children, people with weakened immune systems, and those living in areas with poor sanitation are particularly vulnerable.

The diagnosis of giardiasis can be confirmed by detecting Giardia lamblia antigens in stool.

• For patients suspected of having giardiasis – with diarrhea, cramping abdominal pain, nausea, or vomiting, especially in high-risk groups.
• To determine the cause of unexplained diarrhea.
• For differential diagnosis of gastrointestinal diseases with similar symptoms.
• For individuals who have had contact with patients with giardiasis.
• For skin diseases of unknown etiology (dermatitis, urticaria, eczema).
• To monitor the effectiveness of giardiasis treatment.

• Stool