The Audit® MicroControlsTM Linearity FLQ Urine/Fluids Chemistry for Beckman AU is intended to simulate human patient samples for use in determining linearity, calibration verification, and the verification of reportable range for the following analytes: Amylase, Calcium, Chloride, Creatinine, Glucose, Magnesium, Microalbumin, Microprotein, Potassium, Sodium, Phosphorous, Urea Nitrogen, Uric Acid.