Echinococcus granulosus IgG antibody (serum/plasma)

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like abdominal pain, unexplained weight loss, or organ enlargement, or if you live in or traveled to regions where hydatid disease is common. It may also be used to monitor treatment in people already diagnosed with the infection.

What to Expect Before the Test

No special preparation is needed. You’ll provide a blood sample, usually drawn from a vein in your arm. If you’re on blood-thinning medication, let your provider know before the test.

What the Test Results Mean

Positive results indicate the presence of antibodies, suggesting past or current exposure to the tapeworm. Negative results mean no detectable antibodies were found in your sample. Results alone don’t confirm active disease; they’re often used alongside clinical findings and imaging.

Common Causes of Positive Results

A positive result can occur from past infection, exposure to infected animals (like dogs), or living in areas with high transmission rates. False positives are rare but possible if you’ve had a similar infection or vaccination.