1 Adhere to the instructions for test procedures. 2 Store test kits at 2-8˚C when not in use, and do not use the kits beyond the expiration date. 3 Please don’t touch the membrane on the strips. Avoid direct sunlight and direct blows during testing. 4 Unsealed cassettes should be used immediately, otherwise would affect the test results. 5 The sample to be tested should be recovered to room temperature (20-25˚C) and must be a homogeneous liquid that cannot be agglomerated, fermented, rancid precipitated, etc., and cannot be colostrum. 6 Do not take tap water, distilled water, or deionized water as a negative control. 7 For high-fat samples, the chromatography speed at the upper side of the test cassette is relatively slow. It is suggested to prolong the reaction time for another 60 seconds. 8 It is recommended to repeat the test with a new cassette when an obvious breakpoint appears on the cassette. 9 This test method is just used for rapid screening purposes; if positive results occur, please verify them by a quantitative method. 10 Considering that all materials, containers, and devices exposed to the sample are contaminated with harmful substances, please wear protective gloves and safety glasses while using the kit.