Controls monitor the reliability in compared measurements for accurate medical analyses. Working well with automatic or manual procedures, the ready-to-use solutions eliminate variability by checking the instruments and method testing factors. Preventing clinical misdiagnoses, the assayed liquids support correct treatment determinations for rapid patient recovery. The human simulating substances are available in various levels to fit specific needs. Used in hematology, diabetes, and other condition examinations, the controls come in easy dispensing bottles for extended storage lifetimes.