There are many techs wondering what is the difference between the PTCB Exam and the ExCPT Exam. Here is a detail link below with comparisons. Hope this answers your questions!

**A huge difference would be that the ExCPT Exam cost less and it is less required to have in some states. ExCPT is less popular than the PTCB, but that is soon changing. Both tests focuses in pharmacy technician subjects but in a different perspective.
( Ignore exam price for the ExCPT in this link)

PTCB Exam:     Cost: $129
ExCPT Exam :   Cost: $105