I was tardy having my 18 month blood work done by almost 3 months. The good news is, so far all of my labs are coming back great! I will say my thyroid was low and we just adjusted my levothryoxine down again for the 3rd time.
Give or take a few months, you knew you were in good shape. "Tardy?" Some people use the word, but in my part of the world, I recall hearing it only in relation to school. It sounds cute to me.