Toxicity Screening for Giardia lamblia (Giardiasis) – Immunoassay

What Does This Test Measure?

The test detects specific antibodies (immunoglobulins) produced by your immune system in response to *Giardia lamblia*. These antibodies are found in your blood and can indicate past or recent exposure to the parasite, though they may not always confirm an active infection. This is a qualitative test, meaning it only tells you if antibodies are present, not their exact amount.

How Is the Sample Collected?

A blood sample is drawn from your arm by a healthcare professional. This test does not require fasting or special preparation.

What Are Common Causes of False Results?

False positives (detecting antibodies when none should be present) are rare but can occur if you’ve had a previous infection or exposure. False negatives (missing antibodies when they should be detected) are also possible if the infection is very recent or has already cleared from your system.

How Is This Test Used in Clinical Care?

This test is often used as a screening tool, especially in settings where giardiasis is common (e.g., travel, daycare centers, or after exposure to contaminated water). It helps guide further testing, such as stool exams, if needed.