What's the Name of That Book??? discussion

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SOLVED: Children's/YA
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SOLVED. Young Adult Sci-Fi About a Boy In a Jungle Lab. Spoiler ahead. [s]
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Looking for an amazing book I read at my local library about 4 years ago, I think it was a fairly new book at the time. It’s about a teenage boy, captured and currently living in a secret jungle lab. He’s trying to figure out why he’s there, how to get out, and the purpose of the lab.
Spoiler:
I might be wrong, but he might be genenticlly engineered not captured.
Any help finding this book would be amazing.
Best wishes!