How to say “Could contamination explain why both samples gave the same result?” in Japanese

In Japanese

両方(りょうほう)の試料(しりょう)で同(おな)じ結果(けっか)が出(で)たのって、汚染(おせん)が原因(げんいん)だったりする？

Ryōhō no shiryō de onaji kekka ga deta no tte, osen ga gen'in dattari suru?