Table 1.

Published studies on CA 19.9 cut-off values to predict resectability. SL: Staging laparoscopy

Study	n	CA 19.9 level	Type of surgery to determine resectability	Positive predictive value	Sensitivity	Specificity
Kilic et al. 2006	51	256.4 U/mL	Laparotomy	91.4%	82.4%	92.3%
Schlieman et al. 2003	89	150 U/mL	Laparotomy	88%	71%	68%
Zhang et al. 2008	104	353.15 U/mL	Laparotomy	84.38%	93.1%	78.3%
Fujioka et al. 2007	244	157 U/ml	Laparotomy	–	69.2%	58.7%
Kim et al. 2009	72	92.77 U/mL	Laparotomy	–	67.8%	75.0%
Karachristos et al. 2005	63	100 U/ml	SL	–	100%	64%
Maithel et al. 2008	262	130 U/ml	SL	–	50%	74%
Connor et al. 2005	159	150 U/ml	SL	95%	44%	88%
Halloran et al. 2008	164	150 U/ml	SL	79%	52%	93%