The extraction of blood samples shall be carried out in accordance with the following procedures:

(1) Full video recording: The traffic police will take the client to a medical institution or a qualified inspection and appraisal institution to take blood samples, and the above institutions can send personnel to take blood samples if necessary. The traffic police should video the whole process of collecting blood samples to ensure that the collected evidence is legal and effective.

(2) Two professionals shall take blood samples as required, and two blood samples shall be taken for standby. Alcohol drugs shall not be used to disinfect the skin.

(3) The extracted blood samples should be packed in clean and dry containers with the names of the parties and the time of blood collection, and then put into sealed bags, one for filing and one for inspection. The sealing material of the sealed bag shall indicate the name of the party concerned, the time of extraction and the purpose of blood sample. Signed by the parties concerned, fingerprinted, signed or sealed by the traffic police and professional blood collectors. If there is a witness present, it shall be signed or sealed by the witness, and the identity of the witness shall be indicated. If the parties concerned, professional blood collectors or witnesses refuse to sign, fingerprint or seal, the traffic police shall indicate it.

(4) Fill in the blood sample (urine sample) extraction registration form of the parties concerned, indicating the extraction reason, time, place and the name of the person to be extracted, which shall be signed or sealed by the traffic police and blood sampling personnel.

(five) the blood samples for the record shall be signed by the police and inspectors and submitted to the evidence storage room of the inspection and appraisal institution on the spot. Blood samples should be kept at ultra-low temperature before being sent for inspection.

The extracted blood samples shall be registered and sealed on the spot, and the traffic police shall send them to the inspection and appraisal institution of the public security organ or other qualified inspection and appraisal institutions recognized by the public security organ for blood alcohol content inspection within 24 hours. If it cannot be sent for inspection within 24 hours due to special reasons, it shall be kept at low temperature according to the specifications, 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 the next higher level.