PRINCIPLE The membrane of the test device is coated with the conjugate of BSA and 25-(OH)VD on the test region and goat anti rabbit IgG antibody on the control region. Marker pad are coated by fluorescence mark anti 25-(OH)VD antibody and rabbit IgG in advance. When testing sample, 25-(OH)VD in sample combine with fluorescence marked anti 25-(OH)VD antibody, and form immune mixture. Under the action of the immunochromatography, the complex flow in the direction of absorbent paper, when complex passed the test region, The free fluorescent marker will be combined with 25-(OH)VD on the membrane.The concentration of 25-(OH)VD is negative correlation for fluorescence signal, and the concentration of 25-(OH)VD in sample can be detected by fluorescence immunoassay assay. Test Procedure: Please read the instrument operation manual and package insert before testing. 1. Lay aside all reagents and samples to room temperature. 2. Open the Portable Immune Analyzer(WIZ-A101), enter the account password login according to the operation method of the instrument, and enter the detection interface. 3. Scan the dentification code to confirm the test item. 4. Take out the test card from the foil bag. 5. Insert the test card into the card slot, scan the QR code, and determine the test item. 6. Add 15μL serum or plasma sample into  solution, and mix well 7. Add 80μL mixture to sample well of the card. 8. Click the "standard test" button,after 15 minutes, the instrument will automatically detect the test card, it can read the results from the display screen of the instrument, and record/print the test results. 9. Refer to the instruction of Portable Immune Analyzer(WIZ-A101).Xiamen Baysen Medical Tech limited is a high biological enterprise which devotes itself to filed of fast diagnostic reagent and integrates research and development, production and sales into a whole. There are many advanced research staffs and sales managers in the company, all of them are have rich working experience in china and international biopharmaceutical enterprise.