Gold standard 100% whey contains whey protein isolates rated 90+% pure protein Each serving of gold standard 100% whey contains 24 grams of protein Packed with 5.5 grams of branch chain amino acids per serving Only 1 gram of fat per serving in gold standard 100% whey Only 1 gram of sugar and 3 grams of total carbohydrates per serving. Brand: Optimum Nutrition Model: 1101523 100% whey gold standard is the best-selling whey protein from optimum nutrition. Whey protein isolates are 90% pure protein by weight. They are the purest and most expensive form of whey protein that exists. That's why they are the first ingredients you read on the on 100% whey gold standard label.24g of pure muscle building powerby using whey protein isolates as our primary protein source, were able to pack 24 grams of the purest, muscle-building protein per serving, with a lot less of the fat, cholesterol, lactose, and other stuff that you can do without. There's no question optimum 100% whey gold standard is the standard by which other whey proteins are measured.