Table 4. TGA values in the diagnosis of celiac disease at different cut-off levels.

TGA: anti-transglutaminase antibody; PPV: positive predictive value

TGA cut-off value	Sensitivity, %		Specificity, %		PPV, %
	Value	95% CI	Value	95% CI	Value	95% CI
21.74 U/mL	100%	94.64–100	99.0%	96.47–99.88	97.1%	89.40–99.25
29.42 U/mL	100%	94.64–100	99.5%	97.27–99.99	98.5%	90.46–99.79
39.69 U/mL	95.5%	87.47–99.07	100%	98.19–100	100%
41.31 U/mL	92.5%	83.44–97.53	100%	98.19–100	100%
TGA >10 and villous atrophy
29.42 U/mL	100%	94.40–100	98%	95.08–99.47	94.1%	85.84–97.69
36.1 U/mL	100%	94.40–100	98.5%	95.78–99.7	95.5%	87.40–98.50
39.69 U/mL	96.9%	89.16–99.62	99%	96.52–99.88	96.8%	88.64–99.19
41.31 U/mL	93.8%	84.76–98.27	99%	96.52–99.88	96.7%	88.29–99.17
52.7 U/mL	90.6%	80.70–96.48	100%	98.22–100	100%