A method for classification of a solid object usable in analytical or diagnostic procedures, wherein said solid object is of biological origin and comprises tissue samples, embedded tissue samples and sections thereof, cells, bacteria, viruses, or any combination thereof; and the method comprising: providing one or more probes, said probe being capable of interacting with structures on the solid object in question to form probe-object complexes; attaching the solid object to a solid support; providing a solution of the probes of interest; bringing said solution in contact with the solid object attached to the support, detecting the presence of interaction between probe and solid object and the rate of formation of probe-object complexes; and forming a curve based on the detection, the curve representing the amount of probe bound to the solid object over time; and a) approximating said curve with a weighted sum of all primitive curves in a predefined set of primitive binding curves, b) calculating the weight of each primitive binding curve so that said weights minimizes the difference between the detected binding curve and the sum of weighted primitive binding curves, said weights representing a topographic map; and classifying said solid object for use in an analytic or diagnostic procedure by applying a classification algorithm to the weights from step b), using criteria based on said weights, either alone or in combination with further data; wherein said probes comprise a macromolecule or a chemical compound known to interact with a structure in said solid object of biological origin; and the predefined set of primitive curves comprises curves from a monovalent interaction model; and said classification comprises the comparison of the weights representing a topographic map from step b) with the weights obtained for a different solid object, representing another topographic map. providing one or more probes, said probe being capable of interacting with structures on the solid object in question to form probe-object complexes; attaching the solid object to a solid support; providing a solution of the probes of interest; bringing said solution in contact with the solid object attached to the support, detecting the presence of interaction between probe and solid object and the rate of formation of probe-object complexes; and forming a curve based on the detection, the curve representing the amount of probe bound to the solid object over time; and a) approximating said curve with a weighted sum of all primitive curves in a predefined set of primitive binding curves, b) calculating the weight of each primitive binding curve so that said weights minimizes the difference between the detected binding curve and the sum of weighted primitive binding curves, said weights representing a topographic map; and a) approximating said curve with a weighted sum of all primitive curves in a predefined set of primitive binding curves, b) calculating the weight of each primitive binding curve so that said weights minimizes the difference between the detected binding curve and the sum of weighted primitive binding curves, said weights representing a topographic map; and classifying said solid object for use in an analytic or diagnostic procedure by applying a classification algorithm to the weights from step b), using criteria based on said weights, either alone or in combination with further data; wherein