There are blood thinners in the diasalate. Otherwise when his blood got cleaned through the machine - it would clot off the lines. Make sure Ben NEVER takes his blood pressure on the arm with his fistula. I'm hoping someone already told you that - but in following your story - I can't be sure you were given this information. If he's having post-dialysis bleeding - the MD may want to consider how much blood thinner Ben might be retaining after the process. Perhaps some foods with Vitamin K as a post dialysis snack might help counteract the blood thinners. Hope this was helpful. Hang in there. You guys are doing great - truly. It's a very hard journey. <3