Does anyone know of a reference range for a positive, Chromatin (nucleosomal) Antibody test?

Long story, but the condensed version is that I've recently switched from an Internal Medicine Spec. to a Rheumatologist.

Upon switching, I've had new tests ordered. I have tested positive for the Chromatin Antibodies. There isn't a reference range for the test on my lab sheet.... other than a number and a positive result. How can I know what the general numbers are?

Not finding much info on the net.