Understanding Lab Tests for Parasitic Infection
Written by Private MD Labs Medical Writing Team • Last Updated: September 8, 2025
Parasitic infections occur when harmful organisms invade the body, often through contaminated food, water, or contact with infected surfaces. These infections can cause a range of symptoms including digestive issues, fatigue, and abdominal pain. Accurate diagnosis requires specialized laboratory testing to identify the specific parasites present.
Recommended Test
Ova & Parasites w/Giardia Antigen (Stool)
This comprehensive stool test uses concentration and permanent smear techniques to enhance the detection of parasitic ova (eggs) and larvae in stool samples. The test is specifically designed to identify various parasites that commonly cause gastrointestinal infections, including Giardia, providing healthcare providers with the information needed to diagnose and treat parasitic infections effectively.
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Diagnosing Parasitic Infections
Many parasitic infections share similar symptoms with other digestive conditions, making clinical diagnosis challenging. Laboratory testing is essential to identify the specific parasites responsible for symptoms and determine the most appropriate treatment approach. Early detection helps prevent complications and reduces the risk of transmission to others.
When to Consider Testing
Testing for parasites may be recommended if you experience persistent digestive symptoms, have recently traveled to areas with poor sanitation, or have been exposed to contaminated water sources. Multiple stool samples may be required over several days to increase the likelihood of detecting parasites, as they may not be present in every sample.
Important Considerations
The information here is for educational purposes only and is not a substitute for professional medical advice. Always consult with a healthcare provider for diagnosis and treatment. Proper sample collection and timing are crucial for accurate test results.
