In Buhner's book he mentions that studies were done that proved cat's claw can raise CD57 levels. If I were you, I would continue with the herbs at least 6 months and have it tested again.
I know there's conflicting data about the significance of the CD57 level, but I'd feel more comfortable if it were higher. If you're symptom free, you might want to try astragalus too. Astragalus is the main herb for Lyme prevention. For those with chronic Lyme, it can make symptoms worse due to boosting the immune response that is already dysfunctional. You just have to try it and see.
My initial CD57 was 39 in Sep 2016. The only treatment I've had for Lyme was 7 days of minocycline back in January and 4-5 drops of cat's claw 3x day for a few months. After Thanksgiving, my CD57 was 48. A tiny bit higher. Don't know if I can rely that yet. Time will tell.
I'd be interested to know if coinfections have any affect on CD57 levels. I've only seen references to Lyme.
Thanks! I will ask about
the astragalus when I see him next week. I just started the Cat's Claw and Japanese Knotweed about
a month ago, so I don't even think I had started them when the tests were done. I am doing 20 drops of Cat's Claw 3 times a day, and 5 drops of Japanese Knotweed 3 times a day. I didn't Herx at all when I started them, which I take as a good sign. He's really big on the colloidal silver, so I think he's going to say to keep doing that instead of astragalus. I seem to be doing well on it, so I may just stick with it.