The nutritional value of fake crab meat differs from real crab meat because of its ingredients. A 3-ounce serving of imitation crab provides 51 calories, 6.5 grams of protein, 0.4 gram of fat and close to 13 grams of carbohydrates. The sodium content of fake crab meat is very high, with 715 milligrams per serving, which corresponds to about a third of all the sodium you should eat in a day.