A Canadian news agency's investigation into fast-food chain's ingredients turned up concerning results for Subway.
CBC News tested several chains' chicken to see how much of the meat was actually poultry. While most of the results showed close to 100 percent chicken, Subway's turned up only 53 percent chicken DNA, according to the report.
The rest of the DNA in the oven roasted chicken showed up as soy, according to the report.
Subway Canada said in a statement to the CBC that it disagreed with the findings. The company said it uses soy protein in its chicken to stabilize texture and moisture, but that it makes up less than 1 percent of its chicken.
"We tested our chicken products recently for nutritional and quality attributes and found it met our food quality standards," the company said in its statement to the CBC. "We will look into this again with our supplier to ensure that the chicken is meeting the high standard we set for all of our menu items and ingredients."
You can read about the findings for other restaurants here.