Hi Mel,
I just saw your post. As with all parameters for blood work there is a threshold that is considered "normal". It seems this is what you fit with this latest blood work.

ACA is something that isn't static. So, usually the bloods are done at intervals and then a result is given. Is that what happened with you?

I understand how hard it is - an answer sometimes is not found. I know I struggled with this. As you may remember my results remained at "borderline". But due to my 3 late losses and my borderline results a diagnosis of "a condition mimicking APS" was given. This didn't help my head - especially through this pregnancy. I often think... What if we are barking up the wrong tree - what if - what if... So, I am hearing you and empathising and sending so much love and many hugs.
It will be interesting to hear what your specialist says. I am here - always around. I just try not to post too much in here - I don't want to hurt anyone with my ticker.