Can another fna thyroid nodule biopsy be taken 2 weeks after a previous fna biopsy?

It can but why: It can be done 2 weeks after the first one, but i wonder why it needs to be done. Was the first one not informative?

Better to wait: Cytopathologists may preferr that you wait a couple of months if it is slightly suspicious but inconclusive. Inflammation can make interpretion harder. On the other hand, if the fna was nondiagnostic because of too few cells, it is desirable to repeat it within a reasonably short period of time.