What's this test for?

This test is ideal if you're experiencing persistent swelling in your arms, legs, or groin, unexplained fevers that come and go, or skin changes after traveling to tropical regions. It helps detect antibodies to filarial parasites, which are transmitted through mosquito bites in certain parts of the world and can cause long-lasting lymphatic problems. Many people use this test when they've traveled to areas where filariasis is common and are experiencing unusual symptoms that could be related to parasitic infection.

What happens after I get my results?

You'll receive detailed doctor notes in simple language explaining what your antibody levels mean and whether you have signs of filarial infection. These notes include personalized recommendations like whether you need follow-up testing, potential treatment options if positive, or lifestyle measures to manage symptoms. You'll also get the standard lab report and can track your antibody levels over time using our trends feature, which is especially helpful if you're monitoring treatment effectiveness or have ongoing travel-related health concerns.

What's included in this test?

This test measures IgG4 antibodies against filarial parasites. This test specifically measures IgG4 antibodies against filarial parasites, which are the body's immune response to these parasitic worms. IgG4 is particularly useful for detecting chronic or past filarial infections, especially in people who may have been exposed through travel to endemic areas. This antibody marker helps identify if your immune system has encountered these parasites, even if you're not currently showing active symptoms.

Who should consider getting this test?

This test is important for anyone who has traveled to or lived in tropical regions where filariasis is common, including parts of Africa, Asia, the Pacific Islands, and South America. You should also consider it if you're experiencing unexplained lymphatic swelling, recurring fevers, or skin inflammation after potential mosquito exposure in these areas. Healthcare workers, military personnel, missionaries, or long-term travelers to endemic regions may benefit from screening.

What symptoms indicate I may need this test?

Common symptoms that suggest possible filarial infection include persistent swelling in the limbs or groin area (lymphedema), episodes of fever with chills, skin redness or inflammation, and enlarged lymph nodes. Some people experience repeated infections in the affected areas, skin thickening, or a feeling of heaviness in the swollen limbs. These symptoms typically appear months to years after initial mosquito bite exposure in endemic areas.

What is filariasis and why does it matter?

Filariasis is a parasitic infection caused by thread-like worms transmitted through mosquito bites in tropical and subtropical regions. The parasites live in the lymphatic system and can cause chronic swelling, disability, and disfigurement if left untreated. Early detection through antibody testing is important because treatment is most effective before permanent lymphatic damage occurs, and identifying infection helps prevent further transmission to others.

What does a positive result mean?

A positive IgG4 antibody result indicates that your immune system has been exposed to filarial parasites at some point. This could mean you have an active infection that needs treatment, or it might reflect a past exposure that your body has already cleared. Your doctor will likely recommend additional testing to determine if active parasites are present and whether treatment with anti-parasitic medication is needed.

What does a negative result mean?

A negative result means no IgG4 antibodies to filarial parasites were detected in your blood, suggesting you likely have not been infected with these parasites. However, if you were very recently exposed (within a few months), antibodies might not have developed yet, and retesting may be recommended if symptoms persist. Negative results are reassuring if you've had potential exposure but are experiencing unexplained symptoms.

How can I prevent filarial infection?

Prevention focuses on avoiding mosquito bites in endemic areas through use of insect repellent, wearing long sleeves and pants, sleeping under mosquito nets, and staying in air-conditioned or screened accommodations. If you're traveling to high-risk areas, consult a travel medicine specialist about preventive medications. Reducing mosquito breeding sites around living areas also helps minimize exposure risk in endemic regions.

When should I get retested?

If your initial test is negative but you continue to have symptoms or had recent exposure, retesting in 3-6 months allows time for antibodies to develop. If you test positive and undergo treatment, your doctor may recommend retesting after 6-12 months to ensure the infection has been cleared. People with ongoing travel to endemic areas might benefit from periodic screening every 1-2 years to catch any new exposures early.

Getting your blood test with us is easy, private & backed by the power of science.Long story short: In the test options, use the filters or search box to narrow your choices and find the test you want. If you need a hand navigating through options, text our super friendly support team at 754-799-7833, and we'll provide tailored suggestions to help you find the ideal test. Once your order is placed, we’ll create your doctor’s lab order remotely, without any need for you to make a trip to a doctor in person or to talk to the doctor. Expect to receive your doctor’s lab order right in your inbox. It will also be in your patient portal if you need to find it later. We’ll also include instructions regarding fasting and other requirements for your test. Your patient portal will be auto-created hassle-free during checkout. If this is your first time ordering, you'll be prompted to create a password for instant login access to your patient portal. It's a quick way to conveniently access your orders and results whenever you want. When you’re ready, visit one of our 4,000 locations. Just bring your ID – no printing or faxing of your lab order is needed, as your order and details will already be in the lab system. Note that most lab locations don’t accept walk-ins, so it’s best to book an appointment in advance. Don’t worry – we’ll provide detailed instructions along the way. You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy! If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com and we'll gladly help you.

How do I know which test to get?

In the test options, find the test you want. If you’re not sure which test to get, we can lend a hand in finding the right option. Just text or call us at 754-799-7833, email us at support@privatemdlabs.com, and we'll gladly help you. We've got your back and reply quickly.

When will my lab results be available?

Most test results will be available within 1–3 business days. Once they're ready, we'll send an email and text message to let you know. After your blood draw, just hang tight and don't worry – we'll keep you updated and in the loop! If you have any further questions, please text us at 754-799-7833 or email support@privatemdlabs.com, and we'll gladly help you.

Is it possible to make changes to my lab order if I made a mistake with the name, date of birth, or any other details?

Absolutely! We totally understand that errors can happen. No worries, we're here to help you. Just reach out to us via text at 754-799-7833 or shoot us an email at support@privatemdlabs.com. Remember to include your order number and let us know the correct information you’d like to update. Our awesome team will jump right in and make sure everything is sorted out and accurate for you. There are no changes necessary if your address is wrong on the requisition though. We don’t mail anything out. Our lab requires an address to be listed to generate an order.

Do you accept health insurance?

Only HSA & FSA is accepted. Our services are strictly self-pay and cannot be submitted to your health insurance provider except for Health Savings Accounts or Flexible Savings Accounts. This policy applies to all insurance companies, including federal health insurance programs like Medicare. If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com.

Can I cancel my order?

Yes. We get it – sometimes your needs change. As long as your samples haven’t been collected yet, we’re happy to help you cancel your order. If you have any further questions, please text us at 754-799-7833 or email support@privatemdlabs.com. You can read more about our cancellation policy here.

How can I find a lab location near me?

During the ordering process, you’ll be able to select a specific lab near you, with no strings attached! You can switch it up later easily and visit any of our authorized locations as long as it’s the same lab company you selected your test for (Quest Diagnostics or Labcorp). Before you proceed with your order, feel free to browse through all our lab locations here. This will give you the peace of mind of knowing that there's a lab nearby your home, office or your favorite gym. If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com and we'll gladly help you.

Parasite Test for Swelling & Fever - Filaria Antibody

Getting your blood test with us is easy, private & backed by the power of science.

Long story short:

In the test options, use the filters or search box to narrow your choices and find the test you want.
If you need a hand navigating through options, text our super friendly support team at 754-799-7833, and we'll provide tailored suggestions to help you find the ideal test.
Once your order is placed, we’ll create your doctor’s lab order remotely, without any need for you to make a trip to a doctor in person or to talk to the doctor. Expect to receive your doctor’s lab order right in your inbox. It will also be in your patient portal if you need to find it later. We’ll also include instructions regarding fasting and other requirements for your test. Your patient portal will be auto-created hassle-free during checkout.
If this is your first time ordering, you'll be prompted to create a password for instant login access to your patient portal. It's a quick way to conveniently access your orders and results whenever you want.
When you’re ready, visit one of our 4,000 locations. Just bring your ID – no printing or faxing of your lab order is needed, as your order and details will already be in the lab system.
Note that most lab locations don’t accept walk-ins, so it’s best to book an appointment in advance. Don’t worry – we’ll provide detailed instructions along the way.
You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy!

754-799-7833

[email protected]

Blood Test for Swelling and Fever After Travel

Filaria Antibody (IgG4)

90 day happiness guarantee

Prescription & fees included

Easy to understand results

Fast & convenient

90 day happiness guarantee

Prescription & fees included

Easy to understand results

Fast & convenient

What's this test for?

What's included in this test?

What happens after I get my results?

Here’s why 1,000,000+ customers chose us for affordable hassle-free private blood testing.

Find a lab near you

Blood Test for Swelling and Fever After Travel

90 day happiness guarantee

Prescription & fees included

Easy to understand results

Fast & convenient

1,000,000+ blood tests later, here's what our customers say