Kits for identification of Osteoblasts?

[Jamie Love, PhD]

Anyone out there know of a kit  which  will identify osteoblasts.?
We already use Alkaline  Phospahtase (AP), but want to use another
independent test as well.

I understand osteocalcin is a good marker, but have not  found a kit
for it. (If all else fails I'll contact some author's about using
thier Abs & An, but I'd rather use a kit and avoid the hassle).

My Email isn't working correctly, so please post any answers.
(Besides, someone else may want to  know too!).

Thanks

Jamie