I forget how to do this. I have three colors of test strips, not sure if it will help but we put a dot of blood on each of them Lol and I forget how to tell what kind of blood it is. I am teaching sewing an da little girl poked her finger so I went into Homeschool mom mode haha
I am familiar with the 2 strip test, but not a test with 3 strips. However, if you have two strips, one will detect the antigen for A and one will detect the antigen for B. Your blood has one antigen or the other if you detect "clumping" on that strip. So, if you see clumping on the A strip, you have type A blood. If you see clumping on the B strip, you have type B blood. If there is clumping on both, you're AB, and if there is clumping on neither, you're type O.
