All the current options I list on my blog for these sources are here:
Where to Buy Real hCG Online
At the moment there are 4. They are all U.S. companies, all with their own medical staff, who legally prescribe you your hCG using telehealth (online medical intake form, a short phone call or Skype chat with the doctor), and then all hCG vials coming from U.S. compounding pharmacies. All batches of hCG in U.S. compounding pharmacies are potency tested and endotoxin tested by third-party laboratories.
You can see my visit to one pharmacy where I was shown how hCG is made, utilized by one of the companies on the blog.