Lyme Arthritis Blood Test

What is Lyme Arthritis?

Lyme arthritis is a late-stage manifestation of Lyme disease characterized by episodes of swelling and pain in large joints, particularly the knee. It is caused by the bacterial infection Borrelia burgdorferi transmitted through tick bites, typically occurring months to years after the initial untreated infection. The Lyme Disease Antibody with Reflex to Antibodies IGG & IGM Blot is the most important test for diagnosing Lyme arthritis.

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What causes Lyme arthritis?

Lyme arthritis is caused by the bacterial infection Borrelia burgdorferi, which is transmitted to humans through the bite of infected black-legged ticks (deer ticks). When Lyme disease goes untreated in its early stages, the bacteria can spread through the bloodstream to joint tissues, particularly targeting large joints like the knees. This bacterial invasion triggers an inflammatory response in the joint, leading to the characteristic episodes of swelling, pain, and stiffness that define Lyme arthritis, typically appearing months to years after the initial tick bite.

What is the best test for Lyme arthritis?

The Lyme Disease Antibody with Reflex to Antibodies IGG & IGM Blot is the most important test for Lyme arthritis because it detects specific antibodies your immune system produces in response to Borrelia burgdorferi infection. This comprehensive test starts with an initial screening and automatically reflexes to confirmatory Western blot testing for both IgG and IgM antibodies if the screening is positive or equivocal. The two-tiered approach provides the most reliable and accurate method to confirm that your joint symptoms are related to Lyme disease, helping distinguish Lyme arthritis from other types of arthritis and ensuring you receive appropriate antibiotic treatment.

When should I get tested for Lyme arthritis?

You should get tested if you experience sudden swelling and pain in one or more large joints (especially your knees) and have a history of tick exposure or live in an area where Lyme disease is common. Testing is particularly important if you had a tick bite weeks or months ago, even if you never developed the classic bulls-eye rash, or if your joint symptoms come and go in episodes. You should also consider testing if you have unexplained arthritis that hasn't responded to typical treatments, or if you spend time in wooded or grassy areas where deer ticks are present.

What are the symptoms of Lyme arthritis?
Lyme arthritis typically presents as sudden episodes of severe swelling and pain in one or more large joints, with the knee being the most commonly affected joint. You might notice your knee becomes significantly swollen, warm to the touch, and difficult to bend or straighten. The swelling often comes and goes in episodes that can last weeks to months, with periods of improvement in between. Other symptoms include joint stiffness, particularly after periods of rest, reduced range of motion, and sometimes fatigue or mild fever during flare-ups.
Who is at risk for Lyme arthritis?
Anyone who has had Lyme disease and did not receive prompt treatment is at risk for developing Lyme arthritis. Your risk is higher if you live in or have visited areas where Lyme disease is endemic, particularly the northeastern, mid-Atlantic, and upper Midwest regions of the United States. People who spend time outdoors in wooded or grassy areas with high tick populations, such as hikers, campers, hunters, and outdoor workers, face increased exposure risk. Children and adults who had Lyme disease but never noticed symptoms or didn't seek treatment are particularly vulnerable to developing this late-stage complication.
What happens if Lyme arthritis is left untreated?
Untreated Lyme arthritis can lead to chronic joint damage and persistent inflammation that becomes increasingly difficult to treat over time. The repeated episodes of swelling and inflammation can cause permanent damage to cartilage and bone in affected joints, potentially leading to chronic pain and reduced mobility. Some people develop antibiotic-refractory Lyme arthritis, where joint inflammation persists even after the bacterial infection has been eliminated, requiring more aggressive anti-inflammatory treatments. Early diagnosis and treatment with appropriate antibiotics are essential to prevent these long-term complications and achieve full recovery.
Can Lyme arthritis be diagnosed with a blood test?
Yes, Lyme arthritis is diagnosed with a blood test that detects antibodies to Borrelia burgdorferi, the bacteria that causes Lyme disease. The Lyme Disease Antibody test with reflex to Western blot is the standard diagnostic approach, using a two-tiered testing method to accurately identify antibodies your body produces in response to the infection. While the blood test doesn't directly detect bacteria in your joint, it confirms you have or had Lyme disease, and when combined with your joint symptoms and medical history, helps your doctor diagnose Lyme arthritis and rule out other forms of arthritis.
How is Lyme arthritis treated?
Lyme arthritis is treated primarily with oral antibiotics, typically doxycycline, amoxicillin, or cefuroxime, taken for 28 days or longer depending on the severity of symptoms. Most people experience significant improvement within weeks of starting antibiotic therapy, though joint swelling may take several months to completely resolve. For persistent inflammation after antibiotic treatment, your doctor may recommend anti-inflammatory medications like NSAIDs or disease-modifying antirheumatic drugs. In rare cases of antibiotic-refractory arthritis, additional treatments such as corticosteroid injections or arthroscopic surgery may be necessary to remove inflamed joint tissue.
How can I prevent Lyme arthritis?
The best way to prevent Lyme arthritis is to avoid tick bites and seek prompt treatment if you develop early Lyme disease symptoms. When spending time outdoors in tick-prone areas, wear long sleeves and pants, use EPA-registered insect repellents containing DEET or picaridin, and perform thorough tick checks after outdoor activities. If you find an attached tick, remove it promptly with fine-tipped tweezers and watch for signs of Lyme disease such as the bulls-eye rash, fever, or flu-like symptoms. Seeking immediate medical attention and antibiotic treatment for early Lyme disease can prevent the bacteria from spreading to your joints and causing Lyme arthritis.
What can I do at home for Lyme arthritis?
While antibiotic treatment is essential for Lyme arthritis, several home remedies can help manage symptoms and support recovery. Apply ice packs to swollen joints for 15-20 minutes several times daily to reduce inflammation and pain. Rest affected joints during flare-ups while maintaining gentle range-of-motion exercises to prevent stiffness. Over-the-counter anti-inflammatory medications like ibuprofen can help manage pain and swelling. Elevating the affected joint, especially when resting, can reduce swelling. Once inflammation subsides, low-impact exercises like swimming or cycling can help restore joint function and strength without causing additional stress to healing tissues.
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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.
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?
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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.

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If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com.
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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.
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If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com and we'll gladly help you.
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Lyme Disease Antibody with Reflex to Antibodies IGG & IGM Blot
What's included
Fast & easy, results by email & SMS
No need to visit a doctor
Private & confidential
No insurance needed
Results explained
No extra fees paid at the lab

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