Table 1.

Active surveillance criteria definitions

AS Criteria	Clinical Stage	PSA (ng/ml)	Gleason Grade	Total Pos Cores	% Single Core Pos	PSAD (ng/ml/cc)
NIH risk:
Low	T2a or less	20 or Less	3 + 3 or Less	–	–	–
Expanded	T2a or less	20 or Less	3 + 4 or Less	33% or Less	–	–
Epstein	T1c or less	–	3 + 3 or Less	2 or Less	50% or Less	0.15 or Less
Toronto	–	10 or Less	3 + 3 or Less	–	–	–
PRIAS	T2a or less	10 or Less	3 + 3 or Less	2 or Less	–	0.2 or Less
Royal Marsden	T2a or less	15 or Less	3 + 4 or Less	50% or Less	–	–