Worth applying to PhD Programs with a very bad Math Subject GRE I just took and received a very bad math subject gre score of 600, or 37th percentile. 
Would it still be worth it to apply to any school that requires the subject test? I've been working at several tech startups for a few years so some of the material wasn't as fresh as it maybe would have been.  

A bit of my background, I'm finishing up my masters in math at a top 10 university, I don't have any publications yet but I'm working on a thesis under a very well known professor. My grades are good and I'm a TA and grader at the university. 

I guess the question is whether or not admissions committees would use the poor score as enough of a reason to reject a candidate. Or would it make more sense to wait until I can retake the exam in April and put academia/PhD aside for a year.

Thanks
This is very variable.  Some admissions committees think that the subject GRE score is important, and some do not.  Even at the same department, it may vary from year to year depending on who is on the committee.