It is not. I have been back at work 3 weeks in a row, back to back 2 13 hour shifts on my feet the whole time. For patients further away, they have to send a kit because this testing is not done in the US for the most part. They put me on regular blood thinners for 90 days, and I will be coming off of those the middle of next month. I had a CTA and my nodules have gotten smaller too. There is a private Facebook group, patients of Dr. Jordan Vaughn. It is run by Summer Powers. She is one of the NP's in his practice. Go to Medhelpclinics.com and look their website over.