Patent ID: 8546148

Claim:
A composition for use as an assay reagent, the composition comprising: a solid support comprising a member of a signal producing system and a coating of a synthetic copolymer wherein the synthetic consists of (i) a first copolymerized monomer comprising a pendant moiety wherein the pendant moiety has the formula: —C(O)-A-(CH 2 ) n -G wherein A is NR 1 wherein R 1 is H or alkyl of from 1 to 6 carbon atoms and n is 1 to 10 and wherein G is CHO; CH(OR 8 ) 2 wherein R 8 is alkyl of from 1 to 6 carbon atoms; or a member of a specific binding pair; and (ii) a second copolymerized monomer comprising a pendant moiety wherein the pendant moiety has the formula: wherein: w is 2-4.