Error detection and rejection for a diagnostic testing system

A method of determining a constituent level within a fluid is provided, comprising providing a diagnostic test meter, the test meter comprising a memory and a processor; providing a diagnostic test strip, the test strip comprising at least one code embedded thereon; inserting the test strip into the test meter, the test meter reading the at least one code; performing an error detection and rejection algorithm on the at least one code; and determining the constituent level of the fluid if the error detection and rejection algorithm does not detect an error. Further, a method for minimizing the impact of potential errors that may occur when a device reads a diagnostic test strip including a code comprising a plurality of bits arranged in a physical arrangement is provided. The method comprises determining a probability of each bit to cause a read error; and constructing a logical arrangement of the bits different from the physical arrangement based on these probabilities.