Introduction of oral swabs In the use of Medico oral swab should pay attention to packaging signs, to check whether the packaging is damaged, such as damaged, เป็นสิ่งต้องห้ามโดยเด็ดขาด. This sampling method is suitable for DNA sample collection in any age group. Step up: ขั้นตอน 1: prepare a cup of water, drink about 50 ml of water to wash the …