Patent ID: 7247497

Claim:
A method of testing multiple fluid samples, said method comprising: (a) providing a substrate carrying multiple arrays on a first side of said substrate where each array comprises multiple regions of biopolymers linked to said substrate in a predetermined configuration; (b) assembling a cover to the first side of the substrate such that the cover and the substrate together form a plurality of chambers each containing a biopolymer array and each being accessible through its own first and second ports positioned on the same side of said substrate; (b) introducing multiple test samples and a reference sample into respective chambers through a port of each chamber such that the fluid samples contact respective arrays, wherein at least one of the arrays is exposed to a test sample under a first set of conditions and at least another one of the arrays is exposed to a reference sample but not test sample under the same set of conditions; and (c) observing a binding pattern of the arrays.