Clark take a look at this post. I think its by real KG sales rep or manager. He doesn't think the number correctly reflects Recothrom sales since Reco was launched within 30-90 days.
In most cases, analysts can obtain sales volume to distributors as well as sales volume to hospital end-users. (Some companies such as MDCO even disclose both figures to investors.) Armed with these data, the only unknown is pricing and it’s not hard to come close on that.