Thank you so much . Now I get itPCCA accreditation is voluntary; however, most, if not all, people doing compounding, sterile or non-sterile, have its affiliation due to the advantage of: training, consultation, buying power of raw ingredients/ equipment, help with set-ups/ guidance etc. In the field of non-sterile : if you do hospice or LTC, you will get tremendous help from PCCA with formulation/ ingredient buying power for things such as wound-care product, ABH / supp./ capsules formulation etc. non-sterile Rx, with PCCA, goes above and beyond the typical retail Kenalog in Lubiderm or Cholestyramine in Aquaphor or Prevacid in Sod. BiCarb. Besides, it's quite a prestigious affiliation as it's well-known in the compounding world. If you don't do anything huge such as LTC, hospice, nursing homes etc. , it's really not necessary.