Performance Characteristics Detection Limit : 10 pg/ mL ; Linear Range: 10 - 3000 pg/ mL; Linear correlation coefficient R ≥ 0.990; Precision: within batch C.V. is ≤ 15%; between batches C.V. is ≤ 20%;   1. Store the detector buffer at 2～30℃. The buffer is stable up to 18 months. 2. Store Aehealth Estradiol 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.