text: There are very few universities in the US that take students based only on TOEFL scores. One of them is Oregon Institute of Science and Technology (I am specifically talking about the Masters in Biology program. I do not know about the others). All the other universities will need a GRE score along with the TOEFL score. Some universities might even ask you for a subject GRE score. To specifically answer your question, 99.5% of the universities do not take in students without a GRE score.