Assay devices, assay detection systems, and methods comprising same for analytical tests, medical assays, diagnostic tests, medical diagnosis, risk assessment, or quality control purposes are provided. These devices, systems, and methods are designed to be employed at the point of care, such as in emergency rooms, operating rooms, hospital laboratories and other clinical laboratories, doctor's offices, in the field, or in any situation in which a rapid and accurate result is desired. The systems and methods process samples, such as clinical, biological, or blood sample, and read data from colorimetric based biochemical assays to provide an indication of the presence or absence of a bacterial, fungal, or viral contaminants therein. The assay devices include an optical reader apparatus and barcode scanner for reading and matching the test results to identification information provided by the barcodes to facilitate ease of tracking compliant and noncompliant samples.