[Histonet] Antibody for HBsAg

[Bliven, Laura]

I'm looking for a good Hepatitis B Surface Antigen antibody.  Must be ASR.  I know recently some companies changed from IVD to ASR or RUO.  In our clinical setting it must be at least ASR.  Also, I understand that it matters whether we use a polyclonal or monoclonal antibody.  Should I assume that the antibody must be polyclonal for this virus as some others viruses require it, so it's not too specific and may miss positive cases?

So, the questions are:
which antibody for HBsAg that's ASR (no RUO labeled)
and polyclonal or monoclonal? 
Antibody consistency from the company is important as we use concentrated antibodies. 

Thanks,

Laura Bliven
Histology Lab/IHC
Marshfield Laboratories
1000 N. Oak Ave.
Marshfield, WI 54449