Paging all pretend doctors, Grey’s Anatomy fans, and closet med school dropouts — it’s time to scrub in! This quiz will test your knowledge of the mysterious alphabet soup doctors toss around like second nature. From “SOB” to “CABG,” only the sharpest minds (or those who’ve binge-watched 19 seasons of hospital drama) will survive. Think you can decode these 40 medical abbreviations without flatlining? Well, let’s take your vitals — and your vocab — stat.