FDA Trans Fat Labeling: What You Need to Know - LabelCalc Jan 10, 2019 · According to the FDA, trans fats should appear as “Trans fat” or “Trans” on the nutrition facts panel on a separate line located directly underneath “Saturated fat.”. Values for trans fats must appear in grams per serving. If the value for your product is under 5 grams per serving, then you must round it to the nearest 0.5 gram.