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IgG Antibody to *Echinococcus granulosus* (Serum)

Published: August 9, 2026Updated: August 16, 2026

This test measures the level of antibodies in your blood that your immune system produces in response to a parasitic infection caused by *Echinococcus granulosus* (commonly called hydatid disease).

Quick summary

["Detects past or active infection from a tapeworm parasite that can affect organs like the liver or lungs."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
51760-7
Short code
E chaffeensis IgG+IgM SerPl Ql
Synonyms
E chaffeensis IgG+IgM SerPl Ql
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
82784
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like abdominal pain, unexplained weight loss, or if they suspect you might have been exposed to a parasitic infection. It’s also used in cases where hydatid disease has been diagnosed or suspected in the liver or other organs.

What to Expect Before the Test

No special preparation is needed. You’ll have a small needle inserted into your arm to draw a blood sample. The process is quick and typically painless. If you’re nervous, let your healthcare provider know so they can provide reassurance or additional support.

What to Expect During the Test

After the blood is drawn, you may feel a slight pinch or discomfort for a moment. The area will be covered with a bandage, and you can resume normal activities immediately. The blood sample will be sent to a lab for analysis.

What the Results Mean

If your test results are positive, it means your body has detected antibodies to the parasite, indicating past infection or exposure. A negative result suggests no current infection. Results should always be interpreted by your healthcare provider in the context of your symptoms and medical history.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

IgG Anti-Echinococcus Antibody

Frequently asked questions

What does a positive result mean?
A positive result suggests you may have been infected with *Echinococcus granulosus* in the past or currently have the infection. This parasite can cause serious health issues, including cysts in organs like the liver or lungs. Treatment may involve medications to kill the parasite or surgery in severe cases. Always consult your healthcare provider for guidance tailored to your situation.
What does a negative result mean?
A negative result means your body did not detect antibodies to this parasite at the time of testing. This could mean you have never been infected or that the infection has cleared. However, if you suspect exposure or symptoms, further testing or evaluation may be needed.
How often should I get this test?
Your healthcare provider will determine the frequency of testing based on your symptoms, medical history, and risk factors. If you live in an area with known hydatid disease outbreaks or have a history of exposure, they may recommend periodic testing. Follow their advice for the best care plan.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy