Protein content varies in egg protein powder depending on the manufacturer, however a quality egg protein powder should contain around 70-80% protein.
Protein content in casein protein powders can vary from brand to brand, but a good quality casein should have around 70-80% protein or higher.
Hemp protein powder generally has less protein content than other powders and includes far more fiber as well as omega-3 and omega-6 fatty acids.
Protein content in whey protein powders can vary greatly from brand to brand and depending on the type of whey protein used.
The amount of protein in a soy protein powder largely depends on how refined the product is. For best results you should seek a "soy protein isolate".
The amount of protein found in beef protein powders can vary greatly depending on the quality of the product.
How much protein in whey protein powder can vary greatly from product to product.
Total protein content largely depends on how pure the rice protein product is and how many additives have been included.
The amount of protein in pea protein powder largely depends on how refined the product is.
The amount of protein powder you take after a workout will largely depend on the type and purity of the protein powder you have purchased.