Audit MicroControls Inc, Eatonton, Ga, has added to its line of calibration verification and linearity controls with Linearity LQ special diabetes controls. The ready-to-use liquid product is designed to simulate human serum samples for determining linearity, calibration verification, and verification of the reportable. Linearity LQ special diabetes controls consist of five levels that demonstrate a linear relationship to each other when assayed for C-peptide, fructosamine, and insulin. The product has an open-vial stability of 7 days when stored at 2°C to 8°C. Along with the controls, the company offers Auditor QC, a free, online, real-time, data-reduction program. The package provides Levey-Jennings charts and linearity graphs, as well as peer-group analysis for daily quality control product users. Report results are produced immediately and stored on the Auditor QC Web site for future reference. For more information, visit Audit MicroControls.