Maine Standards Company LLC, Cumberland Foreside, Maine, offers the Validate SP2 calibration verification and linearity test kit, which evaluates albumin, C-reactive protein, haptoglobin, and prealbumin in a human serum-based matrix. The product enables clinical laboratories to complete their required serum protein linearity testing and maximize the reportable range while minimizing manual dilutions. Prepared using the “equal delta” method recommended for linearity testing by the Clinical and Laboratory Standards Institute, the kit contains liquid, ready-to-use linearity testing material. Lab professionals can simply add the product from the dropper bottle directly into a sample cup and run as a patient sample in duplicate or triplicate. It stores from 2ºC to 8ºC. For more information, visit Maine Standards.