We are constantly working hard to ensure we provide our customers with best in class antibodies. As a result, we are pleased to offer this antibody in a purified format as of 6th July 2017. The following lots are still unpurified and still in stock as of 6th July 2017- GR71899-3, GR3180255-1. Lot numbers other than GR71899-3 and GR3180255-1 will be purified. Please note that the dilutions may need to be adjusted accordingly. Purified antibodies have the advantage of being enriched for the fraction of immunoglobulin that specifically reacts with the target antigen and for having a reduction of serum proteins.