✔ 最佳答案
Basically saying, you can check your blood type no matter what age you are. in fact, if you are born in HK, there should be a "baby booklet" that record your blood type. blood type tests cost quite a lot of money and usually people won't do it unless they really need to. if you want to know, i suggest you wait just a while because you can donate blood after 16, and before you are allowed to donate blood, they will do a blood test for you and you will find out your blood type!