To make you can find suitable ELISA kits, we supply the same Item with different sensitivity, concentration, and prices. If your search does not find the right product or if you have additional questions regarding the product, you are welcome to contact us by mail: we have more than we can see. If a product does not work as indicated in the datasheet, we will refund the purchase price. As an alternative, we will provide you with a replacement. If you have any questions about cooperation, please do not hesitate to contact us.