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Originally posted by lisalaura
 Thank you for that helpful clarification ZoneCoach!
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You're welcome.
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I use to be better at this when I first started the Zone a yr ago. I need to re-read some pages in the books I have. 
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Some of it is not directly spelled out. I've learned a lot by just asking questions of Dr. Sears' staff and research.
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Tell me if I am right: (Please  )
1. If I have a 3 oz protein, ie: chicken, I count this as 3 P Blocks, and 1.5 F Blocks, having to add ONLY 1.5 F blocks and 3 C to put it in the Zone.
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Correct.
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2. If I have a fat, ie: Cheese, I should count the protein and fat,
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Correct
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but do not count the protein in peanut butter, just the fat. Nuts I should count 70% of the protein and count all of the fat. 
3. If I have a carb from veggie, ie: spinach, Do not count the protein, only the carbs. But if I chose to have "plant source," beans, nuts, etc. Count 70% of the protein and all of the carb.
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Okay, here's where it gets a little tricky. At the risk of really confusing the daylights out of everyone, I'll try to explain.
We've always heard there is protein in just about everything; ie; beans, nuts, peanut butter, breads, grains, even some vegetables. The Zone principle is NOT to count those proteins because it is bound up in the fiber and our bodies can't access it. SCIENTIFICALLY, our bodies do absorb somewhere between 50-75% (depending on how high fiber our diet is and what the item is).
Now, there are two types of proteins ~ complete and incomplete. Complete proteins contain all the essential amino acids (protein building blocks) and come only from animal sources (beef, chicken, eggs, turkey, fish, etc. and of course dairy) Some studies show Soy also contains all of the essential aminos, but some don't. I'm not sure what to believe about soy.
Then there are incomplete proteins. These are what we get from plants. They do not contain all of the essential amino acids, however, most experts agree that if your diet is varied, you get all of essential aminos you need. ie: COMPLIMENTARY PROTEINS. For instance: Beans and rice = a complete protein. Peanut butter & high grain bread = a complete protein. It is said that eating complimentary proteins throughout the day is sufficient to receive enough aminos {vegetarians}. But if you're only absorbing 50-75% of it, then it makes more sense to eat complete proteins to begin with (if you're not a vegetarian).
This is why when you're using a tool like Fitday, the protein count is always over what you think you're getting on the Zone. If you want to be real precise, then sure, go ahead and count SOME of the protein from plant sources, especially if you're consuming a lot of things like nuts, lentils and other legumes along with high grain breads. Most people find success by not doing that. So for those who don't want to think that much, don't stress about it. Just count complete protein for protein, carbs for carbs and fat for fat.
I hope this makes sense.
