sentence: The production of IGSC 20 % , a liquid concentrate of aggregate ‐ free IgG derived from human plasma , follows the same manufacturing processes as IGI , 10 % solution [ Gammagard Liquid in the United States and Kiovig in the European Union ( EU ) ; Baxalta Inc ., now part of Shire Bannockburn , IL , USA ] except for ultra ‐ / diafiltration and final formulation at 20 % ( w / v ) protein concentration .