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Doctor insights on: Lyme Western Blot Ig G Positive 2 Bands Flagellin

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what is difference between IgM and IgG for western blot for lyme. positive for IgM but not IgG, what does that mean? tks

what is difference between IgM and IgG for western blot for lyme. positive for IgM but not IgG, what does that mean? tks

Recent infection: Hi. IgM is present only with recent infection. After IgM levels fall away, IgG takes over for ongoing and recurrent exposure to antigen. (The antibodies in this picture are IgG's). I'm glad your doc was on the ball. She/he may have saved you a world of hurt by making the diagnosis promptly. Good luck! ...Read more

Dr. Randy Baker
623 doctors shared insights

Lyme Disease (Definition)

Lyme is caused by borrelia burgdorferi. Acute symptoms can include bullseye rash, headaches, joint pain, fever, and flu like sx. Chronic symptoms can include fibromyalgia symptoms, nerve pain in extremities, mood swings, brain fog, heart problems. Lab diagnosis is not very reliable, and sometimes clinical ...Read more


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what is difference between IgM and IgG for western blot for lyme. positive for IgM but not IgG, what does that mean? tks

Recent infection: Hi. IgM is present only with recent infection. After IgM levels fall away, IgG takes over for ongoing and recurrent exposure to antigen. (The antibodies in this picture are IgG's). I'm glad your doc was on the ball. She/he may have saved you a world of hurt by making the diagnosis promptly. Good luck! ...Read more

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How can someone test positive for two Lyme-specific bands on western blot and NOT have been exposed to Lyme disease? What is magic about 5 bands?

How can someone test positive for two Lyme-specific bands on western blot and NOT have been exposed to Lyme disease?  What is magic about 5 bands?

Immune complexities: Lyme disease is caused by a certain type of bacteria called a 'spirochete'- they are a whole class actually of bacteria and believe it or not can be found commonly in the mouth or elsewhere in the environment. You have to reach a certain 'threshold' with Lyme testing because there could be some cross-reactivity coming from these other types of bacteria. The immune system is extraordinarily complex ...Read more

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15mts sick, itchy/painful, body sores.Had West.Blot for Lyme, 1active-58kd igG band. Know I need 5/10 for +, but what else causes 58kd to be active?

15mts sick, itchy/painful, body sores.Had West.Blot for Lyme, 1active-58kd igG band. Know I need 5/10 for +, but what else causes 58kd to be active?

Explanation : In your case 58kd mean nothing. It's call crossreactivity and can not proof Lyme D. with your rashes/sore you definitely need help. May be dermatologist will help. ...Read more

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Tested positive for Lyme disease IgM but my western blot test came back negtive?

Tested positive for Lyme disease IgM but my western blot test came back negtive?

Then it's not Lyme: Lyme disease can be tricky -and you want to make sure you see someone like an Infectious Diseases doctor who knows how to treat it. The diagnosis is actually based on clinical findings, and the lab testing is generally 'supportive'. Since you're Western blot is negative, then it's very unlikely you have Lyme. There are other diseases that could cause 'Lyme-like' symptoms -and good to get evaluated ...Read more

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I tested positive for Lyme disease. I was given the EIA (result 6.1), IgG (10 bands present) and IgM WB (3 bands) Does this mean I've had LD for a whi?

Yes: The presence of IgG usually indicates past infection which might have occurred months or even years ago. The presence of IgM indicates a current or recent infection. ...Read more

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What would cause a positive Lyme titer but negative western blot?

What would cause a positive Lyme titer but negative western blot?

see details: The lyme titer is nonspecific and can be positive by itself if the presence of other autoimmune diseases, viral infections or a history of lyme in the distant past. I negative western blot rules out active lyme disease. ...Read more

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Can a positive Lyme disease western blot strip test be mistaken for another disease?

Can a positive Lyme disease western blot strip test be mistaken for another disease?

Yes!: No lab test is perfect, including the westen blot for lyme. There is an approximately 4% chance of a positive being a "false positive" test. There is also an approximately 20% chance of false negatives, someone with lyme not having a positive western blot. This is why lyme is ultimately a clinical diagnosis, with labs used to support a diagnosis. Other tests may also be useful. Please see comment:. ...Read more