The numbers correspond to a specific band - each band represents a DNA or protein or antigen component of the B. burdorferi or Lyme bacteria.
"OsP" further clarifies the type of the part of the microbe, or "outer surface protein"
"kDa" is kilodaltons, a scientific measurement of atomic mass
- The blot paper with the bands of the bacterial components are exposed to your blood.
- The goal is to see if the body has created antibodies against the Lyme microbe and they use the different bands/parts of the bacteria to try to detect this reaction.
- If there are antibodies in your blood that have been produced due to the presence of the microbe components of those bands, it will show a reaction to those bands.
In other words, our body generally creates antibodies when it finds a microbe or components of a microbe that shouldn't be in the blood. So those antibodies circulate in the blood ready to attack. When the lab applies your blood to the blot paper, the bands associated with those antibodies that were created against various microbe components, will darken indicating a reaction. If the band darkens, the antibody is present indicating the microbe is present.
Specific bands
There are very lyme-specific bands that they've found that are connected with only the microbe (for example 23 & 39) and then there are other bands that can also cross-react with other microbes like dental bacteria (I wouldn't say it shows up on all tests but it's common with infections).
When they created the tests they wanted to pick up as much reaction as possible indicated by our antibodies but they go by only the lyme-specific bands for the minimal reaction for a positive result. The other bands like 41 is "in addition to" the specific bands.
This is all complicated, I know. Took me 2 yrs to understand it ;)
You're lucky in that you have a positive test and don't need to worry too much about
the specific bands. People who produce a negative test, based on the narrow criteria, do need to focus on the specific bands to make sure the test result isn't falsely negative.
Chronic vs Acute
Regarding the "acute" vs "chronic" question... that is a WHOLE OTHER bag-o-worms. It's very likely that you will never know when you were infected. It's tough to accept this for an answer but in some ways, it doesn't really matter. But I understand wanting to know.
I tested entirely negative with my first ELISA test. My LLMD gave me the Western blot and I was "CDC-positive" for IgM (indicating new antibodies to a recent infection) and negative for IgG (an already present infection), yet I'd been infected 16+ years before I tested. Made no sense. We ignored it.
The reason you might not ever know is because the body's immune reaction to the presence of the Lyme infection isn't orthodox - in fact, it's bizarre and not well understood. This is why the serology (antibody) tests are so inaccurate and often don't really tell us a lot of info. Plus, they're created for only one strain.
Some might suggest that since you had more IgG antibodies than IgM antibodies that the tests suggest more of a chronic infection than an acute infection (I describe this in my previous post - in simple infections, IgM are first produced and then IgG are produced for long-term immunity) but this doesn't really apply to Lyme. So, most LLMDs or lyme specialists will suggest that tests don't really indicate "acute" or a "chronic" infection.
What MIGHT tell you more about
how long you've had this infection is your clinical presentation and history of health and possible exposure.
- If you don't live in an endemic area (and you can't go by what the CDC or IDSA deems endemic - half of the country is now endemic) but visited one on vacation back in 1995.
- Or if you never had a tick before but pulled one off in 2000.
- Or if you never had any symptoms until you had a huge negative event in your life and all of a sudden started developing symptoms.
Your case kind of aligns with this scenario - kind of not.
In my opinion, I think most people carry the Lyme microbe (for too many reasons to cite here but if you really want to know I'll share). Like viruses, it can lie dormant in the body or maintained in low population by a healthy immune system. But as we know, stress can impact our lives in many ways and can damage immune function. Next thing you know, you're sick and there could be many reasons why. There are many opportunistic pathogens that lie in wait for a hospitable environment to flourish in.
This is exactly what helps enable Lyme's proliferation in our bodies. What also helps exacerbate an infection is how difficult it is to diagnose and treat effectively. This is how chronic cases develop.
Hope that's helpful!
-p
Post Edited (Pirouette) : 8/2/2016 3:35:47 PM (GMT-6)