Hey, EM peeps. What stops you sending more patients home? Would it be helpful to have a blood test capable of identifying patients with a zero-or-thereabouts risk of dying in the next 30 days? Or not? Discuss.... #thesecretingredient

A little plea: if you know what #thesecretingredient is, please don’t say so quite yet! we really want to encourage some debate about what would - or wouldn’t - help us not admit patients...

Well, #thesecretingredient blood test is real, and shows early promise. But before we reveal more, can I persuade #MedTwitter to consider: what would a test to identify/confirm ED patients (even some you'd usually admit) as very-low-risk need to *do* to be of any practical use?