Questions about the importance of GRE in biostatistics PhD

[dreamer1]

My GRE is V147+Q170+W4.0. I wonder for PhD program in biostatistics which requires me to submit GRE (like Yale), do I need to retake the exam and "refresh" the score?

I am an international student from UIUC majored in electrical engineering with minored in computer science, and I have got five papers so far (2 related to machine learning, 1 related to biomedical image, 2 related to computational biology).

and three recommendation letters (one is from a famous professor in Yale).

Thanks.