The 3 month and 6 month checks were at Mayo. Both were reported as < 0.1. PSA checks since then have been done up here in Duluth MN. 9 month was reported as 0.01. 12 month was 0.01. 15 month was 0.02. 18 month (done yesterday) was 0.03. I sent a message to Mayo when the 0.02 came in, and they responded that anything less than 0.1 is considered undetectable. I have an appointment with my urologist in Duluth next week, and I’m anxious to see what they have to say.