If the extracted blood sample cannot be sent for inspection immediately due to special reasons, it shall be kept at a standard low temperature and can be sent for inspection within 3 days with the approval of the person in charge of the traffic management department of the public security organ at a higher level.

Provisions of public security organs on procedures for handling criminal cases of drunk driving Article 10 Blood sampling procedures shall be conducted in accordance with the following procedures: 1. The traffic police shall take the party concerned to a medical institution or a qualified inspection and appraisal institution or send personnel from the above-mentioned institutions to take blood, and supervise the whole process of blood sampling. 2. Blood collection should be carried out by professionals as required. The traffic police should inform the blood collectors to take blood samples twice, and the skin should not be disinfected with alcohol drugs. Blood samples should be packed in clean and dry containers with anticoagulant added, and the name and time of blood drawing should be indicated. They should be sealed in paper bags, one for filing and one for inspection. The sealed bag shall be marked with the name of the person to be extracted, the time of extraction and the purpose of blood sample, and shall be signed by the person to be extracted, and signed or sealed by the traffic police and blood collection personnel. If the person who has been drawn blood or the person who has been drawn blood refuses to sign or seal, the traffic police shall indicate it. 3. Fill in the registration form of blood collection of the parties concerned, indicating the reason, time and place of blood collection and the name of the person to be taken, which shall be signed or sealed by the traffic police. 4, blood samples should be submitted in time, not timely inspection, should be kept at low temperature.