Thank you so much for your thoughtful reply. It did help allay my fears. My cardiologist had ordered a nuclear stress test last year to determine how well blood was moving, and even though I have a 20 percent blockage in one artery, the test came out within normal parameters. He felt that since blood was moving well, there was no need to check further where calcifications & blockages were concerned. I just accepted his word on this, but I got very worried this week when I saw the posts about Tymlos, because at the time of the visit I was unaware that the drug could affect RCA calcium levels. I wonder now whether I should talk to him about the Tymlos since I've been on it for yet another year, but truth is, I'd hate to repeat that stress test. It was one of the worst I've ever had to undergo!