A specimen test tube is used to accommodate a specimen to be tested. The specimen test tube includes a tube body and a sealing plug. The pipe body includes a pipe body and at least one first engaging structure. The pipe body has a containing space and a nozzle connected to the containing space. The accommodating space is used for accommodating the test object. At least one first engaging structure is located at the mouth of the tube body. The sealing plug has at least one second engaging structure. The sealing plug is installed on the pipe body, and the sealing plug sealing nozzle and the second engaging structure are engaged with the first engaging structure.一種檢體試管用以容納一待測檢體。檢體試管包含一管體及一密封塞。管體包含一管身及至少一第一卡合結構。管身具有一容置空間及連通容置空間的一管口。容置空間用以容納待測檢體。至少一第一卡合結構位於管身之管口處。密封塞具有至少一第二卡合結構。密封塞裝設於管身，且密封塞密封管口以及第二卡合結構卡合於第一卡合結構。
