Accredited Buyer Representative (ABR®)
The Accredited Buyer Representative (ABR®) designation is the benchmark of excellence in buyer representation. This coveted designation is awarded to real estate practitioners by the Real Estate BUYER'S AGENT Council (REBAC) of the National Association of REALTORS® who meet the specified educational and practical experience criteria. wrote on Article on Choosing a Realtor
They mentioned the following with looking for a realtor:
"One credential to look for is an Accredited Buyer's Representative (ABR) designation from the Real Estate Buyers Agent Council, a Realtor group." 
For more Information regarding ABR® Designation or REBAC, Visit