Toxicity Screening for Giardia duodenalis (IgG Antibody)

What Does This Test Measure?

The test detects IgG antibodies produced by your immune system in response to *Giardia duodenalis*, a single-celled parasite that can infect the intestines. These antibodies appear after infection and can persist for months or years, even if symptoms have resolved.

This test may be recommended if you have symptoms like chronic diarrhea, bloating, or stomach cramps that could be linked to a Giardia infection, especially after traveling to areas with poor sanitation or after close contact with someone who has the parasite.

This test is not used to diagnose active infection immediately but helps confirm past exposure or chronic infection when other tests (like stool samples) are inconclusive.

No special preparation is needed. A blood sample will be taken from a vein in your arm by a healthcare professional.

The blood sample is sent to a lab for analysis. Results are typically available within a few days to a week, depending on lab processing times.

A positive result means your body has detected Giardia antibodies, suggesting past or ongoing exposure. A negative result means no detectable antibodies were found in this sample.

Positive results do not always mean you are currently infected; they indicate exposure that may have occurred weeks or months earlier. Consult your healthcare provider for further evaluation if symptoms persist.