Yes, you can.
General needles and syringes can pass through the security check, they do not belong to the prohibited items, but some dangerous goods and contraband is absolutely prohibited to carry.
Security check precautions
We are usually strictly prohibited to carry explosive, flammable, natural, toxic, corrosive and lethal dangerous goods, such as detonators, explosives, firecrackers, gasoline, diesel fuel, kerosene, paint, calcium carbide, liquefied petroleum gas, a variety of acids, as well as easy to deface the subway equipment and the station, the car environment of the goods on board the train, which is necessary to pay attention to.
At the same time, it is prohibited to carry more than 1.8 meters long, bulky things, such as bicycles, washing machines, televisions, desktop computer monitors, refrigerators, combination stereos, etc., animals, as well as obstacles to the public **** hygiene, the car passes through and jeopardize the safety of passengers and other items on the train to ensure that it does not affect others and their own safety.