http://endocrinetech.biz/products.html

Yes this is the one that was being talked about.
said some breeders were using urine instead of blood.

has anyone used this one?

I used it and was it a waste of money! The color you are trying to match is a different color than the color in the pamplet that you are trying to match. The color on their website is different also. At least with Premate you have two colors to compare to. Use Premate. Endocrene is aweful!