This dressing will keep for a day because of the acid from the lime, but once added to your salad or however you're using it, it will oxidize as all things avocado do. So add it when ready to serve. Also, this dressing does freeze well.
Calorie count is purely an estimate calculated using an online application to serve as a guide and not to be taken as accurate nutritional information. Percent Daily Values are based on a 2,000 calorie diet.