RT Journal Article SR Electronic T1 An Assay for Measurement of Protein Adsorption to Glass Vials JF PDA Journal of Pharmaceutical Science and Technology JO PDA J Pharm Sci Technol FD Parenteral Drug Association (PDA) SP 305 OP 315 VO 64 IS 4 A1 Varmette, Elizabeth A1 Strony, Brianne A1 Haines, Daniel A1 Redkar, Rajendra YR 2010 UL http://journal.pda.org/content/64/4/305.abstract AB Protein adsorption to primary packaging is one of the problems faced by biopharmaceutical drug companies. An assay was developed to quantify loss of proteins to glass vial surfaces. The assay involves the labeling of protein with a fluorescent dye, incubation of the labeled protein with the vial surface, elution of the adsorbed protein using a stripping buffer, and determination of fluorescence of the adsorbed protein using a fluorometer. The assay is simple to set up, accurate, sensitive, and flexible. The assay can be modified for indirect measurement of protein adsorption and offers an attractive alternative for researchers to quantify protein adsorption to glass vials and syringes.