VPg is a protein attached to the 5' end of RNA during RNA synthesis in a wide variety of viruses including Poliovirus and Picornavirus. VPg stands for "Virion Protein G".

This is a measure of how the sales force is doing. It is the dollar volume of the sales divided by the total number of guests toured, As an example, If you do 10 tours and you sell one of them a week for $15,000. Divide 15,000 by 10 and you get 1,500. Your VPG is 1500.