A sample carrier generally comprises a sample node and an identifier co-located with the sample node. A sample node may be operative to carry a discrete sample, while an identifier may be operative to provide information associated with the sample carried by the sample node. Embodiments of a sample carrier may comprise a plurality of sample nodes supported in a predetermined spatial relationship relative to a respective sample container such as a respective well of a multi-well plate. A system and method of transferring specimens to a sample carrier include contacting a sample node to the specimen and encoding information associated with the specimen on the identifier. Various alternatives are disclosed wherein the specimen is solid, gaseous, and liquid in form.