Are you confused about what tests to get, what they mean?
T cell response
- Is the earliest to rise and most sensitive then
- Sensitivity decrease over time but in very chronic stages T cell response may be positive when B cell response is not
IgM
- Reacts next and usually diminishes with time
- But in a subset of pateints can persist
IgG
- Appears last and may persist or drop off
- But the more ill, the less likely to have a positive antibody response
Immunoblot (for Borrelia, Bartonella, Babesia and TBRF
- Uses recombinant antigens specific to organism tested
- Increases sensitivity, specificity and ability to detect multiple species
- Should replace western blot testing
Antigen capture (urine)
- Lyme dot-blot of multiple antigens (31, 34, 39, 93)
- Nanotrap of single antigen (31)
- Especially helpful when you can not get blood
FISH (Fluorescent In-Situ Hybridization Assay)
- Detects pathogen RNA – direct detection test
- Able to detect even if embedded in biofilms
- Available for Borrelia, Bartonella, Babesia
PCR (direct detection assay available for Borrelia, Bartonella, Babesia and more)
- Insensitive
- Pathogen load is often too low to detect or intermittent
Culture is gold standard (or cePCR)
CDC criteria of two tier testing is for surveillance not diagnosis
- Half the cases are missed
The immunoblot has replaced the western blot and for serology, use this!
For direct testing, use culture (cePCR) when not on treatment
This is just a guide and only a start to a longer discussion. Check out our membership for more information!
#lyme #lymedisease #lymetesting #lymeawareness #PANS #PANDAS #BGE #ASD #functionalmedicine #childrenshealth #pediatrics #pediatrician