Features: brand new and high quality Fast and Accurate: With results in 15 minutes, the operation is simple, convenient and fast. Clean and hygienic, individually sealed packaging. Easy to use, no requirements on environment. How to Use: 1st: Take blood from the oxtail to get the sample; 2nd: Use the centrifuge device at 4000 revolutions, and separate for 10 minutes to get the serum, or let the blood sample stand for 2 hours to get the serum; 3rd: Use the dropper to draw 3 drops of the upper seru and drip it to the sample hole on the test card, read the result after 15 minutes. Note: This cow pregnancy test kit is disposable consumables, not reusable. Scope of application: for cows that have been mated for more than 28 days. Package Includes: Each test kit provides all the consumables used, including 1 test card, 1 blood collection needle, 1 tube, and 1 dropper. Result Interpretation: C-line must be displayed, otherwise it is deemed invalid result; If the T-line is not displayed, it is considered as non-pregnant. It is recommended to perform re-examination at an interval of 5-7 days; If the T-line is clear or weak, it is considered pregnancy. Specifications: Material: Plastic Weight: Approx.8g Scope of Application: Cows that have been mated for more than 28 days Validity: 18 Months Preservation Method: Store at 4-30 to ensure a dry environment Note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Test Card 1 x Blood Collection Needle 1 x Tube 1 x Dropper