Performance Characteristics Detection Limit:  5.0 mg/L  ; Linear Range:  5~200 mg/L; Linear correlation coefficient R ≥ 0.990; Precision: within batch C.V. is ≤ 15%; between batches C.V. is ≤ 20%; Accuracy: the relative deviation of the measurement results shall not exceed ± 15% when the accuracy calibrator prepared by MAU national standard or standardized accuracy calibrator are tested. 1. Store the detector buffer at 2～30℃. The buffer is stable up to 18 months. 2. Store Aehealth NGAL Rapid Quantitative test cassette at  2～30℃, shelf life is up to 18 months. 3. test cassette should be used within 1 hour after opening the pack. The emergence of urine microalbumin (MAU) is an early markers of kidney damage. Under normal circumstances, the majority protein cannot pass filtration membrane proteins, however, in the pathological conditions (e.g.: inflammation, metabolic disorder and immune damage), the glomerular become hemodynamic abnormalities. Glomerular filtration membrane damage is an important reason for the increasing of urine microalbumin.