[About E-2. Why is E-2 displayed? Because operation is wrong ] The correct operation is to first insert the test strip into the meter, wait for the meter to display the Code, and then let the test strip absorb the sample. Please watch the operation video and user manual carefully. [About after-sales service] If you encounter any problems during using ACCUGENCE produce, please feel free contact us, and you will have timely response from our professional customer service.(Tips: the control solution isn‘t included as is not necessary). [ Use for self-testing at home ] Easy to use and The test results are stable and reliable.High-quality and cost-effective test strips. Lets you accurately manage your Uric Acid Level quickly and easily. [ 1µL Tiny blood sample ] Just need 1 microliter blood sample. Fast, minimize wound and less painful. [ 8-Electrode Test strips ] High accuracy and Anti-interference, Wide HCT range 25-60% , Hematocrit Interference Compensation, Wide operating temperature. Auto Test Strip Type Recognitions. Only 1µL Tiny sample. [Include List] 50 Uric Acid Test Strips, 30 Lancets, 2 Code card. (This listing does not contain Meter).