Parasitic infections occur when harmful organisms like protozoa and helminths invade the body through contaminated food, water, or infected surfaces. They are caused by specific parasites including Giardia lamblia, Entamoeba histolytica, and various intestinal worms that disrupt normal digestive function. The Ova & Parasites with Giardia Antigen stool test is the most important test for diagnosis because it uses concentration techniques to detect parasitic eggs and larvae.
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Parasitic infections are caused by specific organisms including Giardia lamblia, Entamoeba histolytica, Cryptosporidium, and various helminths like roundworms, hookworms, and tapeworms. These parasites enter your body primarily through contaminated food or water, contact with infected surfaces, or in some cases through insect bites or contact with infected soil. Once inside your digestive system, these organisms attach to your intestinal walls and reproduce, disrupting normal digestive function and nutrient absorption while causing inflammation and other symptoms.
The Ova & Parasites with Giardia Antigen stool test is the most important test for parasitic infections because it uses specialized concentration and permanent smear techniques to detect parasitic eggs, larvae, and specific antigens that might be missed in standard stool examinations. This comprehensive test specifically identifies Giardia lamblia through antigen detection while also screening for a wide range of other intestinal parasites including protozoa and helminths. Multiple stool samples collected over several days may be recommended because parasites do not shed eggs or cysts consistently, and this approach significantly increases the likelihood of accurate detection and proper diagnosis.
You should get tested if you experience persistent diarrhea lasting more than a few days, unexplained abdominal cramping or bloating, nausea with weight loss, or notice mucus or blood in your stool. Testing is especially important if you have recently traveled to areas with poor sanitation, consumed untreated water from lakes or streams, or been exposed to contaminated food sources. You should also consider testing if multiple family members develop similar digestive symptoms, as parasitic infections can spread through household contact and shared surfaces.
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What this means
Your test came back negative, meaning no Giardia parasites were detected in your stool sample. This is the expected and healthy result, indicating that Giardia is not the cause of any digestive symptoms you may be experiencing.
Recommended actions
Practice good hand hygiene, especially before eating and after using the bathroom
When traveling, drink only bottled or treated water and avoid raw foods
If digestive symptoms persist, consider testing for other causes or consult your doctor
Maintain proper food handling and cooking practices at home
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