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Toxicity Screening for Giardia lamblia (Serum/Plasma Antibody)

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

This test checks for antibodies in your blood that may indicate an infection caused by Giardia lamblia, a common parasite that can affect the digestive system.

Quick summary

["Helps diagnose possible Giardia infection through immune response detection."]

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

Key facts at a glance

LOINC
17716-2
Short code
T gondii IgE Ser-aCnc
Synonyms
T gondii IgE Ser-aCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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

What This Test Measures

The test detects antibodies produced by your immune system in response to Giardia lamblia infection. These antibodies are part of your body’s defense mechanism against the parasite. If present, they suggest prior exposure or infection.

Why It’s Done

Your healthcare provider may order this test if you have symptoms like stomach pain, diarrhea, bloating, or unexplained weight loss, especially after traveling to areas with poor sanitation or if you’ve been exposed to contaminated water.

What to Expect Before the Test

No special preparation is needed. You’ll provide a blood sample, usually drawn from your arm. The sample is sent to a lab for antibody analysis.

What the Results Mean

Positive results indicate a likely past or current Giardia infection. Negative results mean no detectable antibodies, suggesting no active infection at the time of testing. Follow-up may be needed if symptoms persist.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Giardia Antibody Test

Frequently asked questions

Giardia infections can cause chronic digestive issues, dehydration, and malnutrition. Early detection helps manage symptoms and prevents complications, especially in vulnerable populations like children or immunocompromised individuals.
This test is not used to diagnose active infection directly but confirms exposure through immune markers. If symptoms persist, additional testing (e.g., stool samples) may be required.
How long will it take to get my results?
Results are typically available within 1–3 business days, depending on lab processing times. Your provider will discuss them with you during your follow-up visit.
Can I drink alcohol before this test?
No, avoid alcohol for 24 hours before testing, as it may affect antibody detection accuracy.
  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