I'm confused. Do you mean DNA testing of CTC's? That's pretty new - they examine the CTCs for evidence of AR-V7 or EGFR, instead of just counting them. The count (>5 per 7.5 ml) is not all that good - there can be lots of CTCs that are incapable of metastasizing. Or do you mean something like a Decipher, Prolaris or OncotypeDx test of biopsy cores?
Allen - not an MD
•PSA=7.3, prostate volume=55cc, 8/17 cores G6 5-35% involvement
•SBRT 9 yr onc. results
•SBRT 7 yr QOL results
•treated 10/2010 at age 57 at UCLA,PSA now: 0.1,no lasting urinary, rectal or sexual SEsmy PC blog