<p>The subject tests are recommended but not required. Your application is complete without them. </p>
<p>Admissions are in full reading mode at this point; if they have to wait for your subject test scores, they still have PLENTY of other applications they can read/review in the meantime.</p>
<p>Send the scores regular, not rush, and send an email to admissions telling them that the scores are on their way; they should be able to flag your file to hold off on review until the scores arrive. They want to see the subject test scores, they explicitly ask for the scores; they won’t rush through your application when they know the scores are still to come.</p>