High Protein Snacks: USDA Protein per Serving and What Studies Found

High protein snacks are everyday foods that pack a meaningful amount of protein into a small serving: a container of plain nonfat Greek yogurt has about 17 grams in USDA data, a 3-ounce serving of canned light tuna about 16.5 grams, half a cup of 2% cottage cheese about 12 grams and half a cup of edamame about 9 grams. What separates a protein-dense snack from a calorie-dense one is protein per calorie, and that varies more than most people expect. Below is a USDA comparison table, what a “high protein” label claim legally means, what the snack studies actually measured, and portable options.

Peptide Labs does not sell snack foods; the only protein product we carry is a collagen powder, covered below with its label caveats. This article is general nutrition information, not medical advice.

High protein snacks compared: USDA protein per serving

The table uses USDA FoodData Central SR Legacy entries (FDC numbers in brackets) at common serving sizes. The last column divides protein by calories, which shows how much protein you get per 100 calories of the snack. Brand products vary, so check the Nutrition Facts panel on the package.

Two patterns stand out. Lean animal foods and dairy sit at the top for protein per calorie because they carry little fat or carbohydrate. Nuts, seeds and peanut butter supply useful protein plus fiber and unsaturated fat, but you get roughly a quarter of the protein per calorie of Greek yogurt, so they work better as part of a snack than as its whole protein source. Our guides to almonds and pumpkin seeds cover their full nutrient profiles, and our list of protein-rich meals and ingredients goes beyond snacks. If you need extra energy rather than less, our guide to calorie-dense foods is the better fit.

What "high protein" means on a food label

Protein snacks are a crowded aisle, and the front-of-package wording is regulated. Under FDA rules (21 CFR 101.54), a food can say “high in,” “rich in” or “excellent source of” a nutrient only if one serving provides at least 20% of the Daily Value, and “good source” means 10 to 19%. The Daily Value for protein on labels is 50 grams, so a “high protein” claim points to roughly 10 grams or more per serving.

There is a catch that matters for protein. When a package makes a protein claim, FDA requires the percent Daily Value for protein on the Nutrition Facts panel, and that percentage is corrected for protein quality using a score called PDCAAS (21 CFR 101.9). A bar built on a lower-quality protein can list plenty of grams but a smaller percent Daily Value. Comparing the percent column, not just the grams, tells you more.

Collagen is the clearest example. The Vital Proteins Collagen Peptides label lists 18 grams of protein and 70 calories per serving, and the same label states that collagen is not a complete protein, should not replace dietary protein, and that the product is not for weight reduction. It can add protein to coffee or a smoothie, but it is not a swap for yogurt, eggs or fish; our collagen buying guide explains why.

What snack studies found

Most research on protein snacks comes from one lab at the University of Missouri that tested afternoon yogurt snacks of equal calories in healthy young women, then timed when they asked for dinner and how much they ate. The results are interesting but mixed:

• 2013, Appetite (15 women): 160-calorie yogurt snacks with low, moderate or high protein all reduced hunger compared with no snack. The high-protein version produced lower hunger, more fullness and a later dinner request than the low-protein one.
• 2013, Nutrition Journal (32 women): adding 9 extra grams of protein to a yogurt snack made no measurable difference to hunger, fullness, timing of dinner or dinner intake.
• 2014, Nutrition Journal (20 women): a high-protein yogurt snack reduced afternoon hunger and delayed eating by about 30 minutes compared with chocolate, and was followed by about 100 fewer calories at dinner than chocolate. Differences against crackers were smaller and not statistically clear. General Mills, a yogurt maker, funded the study but had no role in its design or analysis, according to the authors.

These are short laboratory studies in small groups of healthy young women. They measured appetite over a single afternoon, not body weight or health outcomes, so they cannot show that protein snacks change weight over time. They do suggest that a protein-rich snack can be more filling than a sweet one with the same calories. For how protein fits a weight-management plan more broadly, see our guide to protein powder for weight loss.

Healthy high protein snacks on the go

Many of the foods in the table travel well. Sorting them by how much cold storage they need makes planning easier:

• Shelf-stable: tuna in pouches or pull-tab cans, jerky, roasted edamame, roasted chickpeas, nuts, pumpkin seeds and single-serve peanut butter packs.
• Needs a cooler or fridge: Greek yogurt cups, cottage cheese, cheese sticks, milk and hard-boiled eggs. FDA advises eating hard-cooked eggs within one week of cooking and not leaving cooked eggs out for more than 2 hours, or 1 hour above 90 degrees Fahrenheit.
• Pairings that add fiber: apple slices with peanut butter, vegetables with hummus, berries stirred into Greek yogurt, or edamame with a piece of fruit. Hummus alone is modest in protein at about 2 grams per 2 tablespoons, so it pairs well with another protein source.

These high protein snacks on the go cover most situations without a blender. For lower-calorie picks with more volume, our sibling guide to low calorie snacks lists fruits, vegetables and popcorn by calories per serving.

Protein bars and shakes

Packaged bars and ready-to-drink shakes are convenient, but labels vary widely. Check the protein source (whey, milk, soy, pea or collagen), the percent Daily Value for protein, added sugars, and whether the bar is sweetened with sugar alcohols, which can cause gas or loose stools in some people (see our guide to sugar alcohols). Our whey protein guide explains the main powder types.

Who should be careful

• Sodium: one ounce of jerky has about 22% of the 2,300-milligram Daily Value for sodium in USDA data, and half a cup of cottage cheese about 15%. Lower-sodium versions exist; compare labels.
• Kidney disease: the National Institute of Diabetes and Digestive and Kidney Diseases advises people with chronic kidney disease to work with a dietitian or clinician on the amount and sources of protein, because needs can change over time.
• Tuna and mercury: for people who are pregnant, may become pregnant or are breastfeeding, and for young children, FDA and EPA place canned light tuna in their lowest-mercury group and albacore tuna in a middle group.
• Allergies: milk, eggs, fish, soy, peanuts and tree nuts are all among the nine major food allergens FDA recognizes, and they cover most of the snacks above.
• GLP-1 medicines: people eating less on these drugs are often encouraged to prioritize protein; our GLP-1 diet guide and article on muscle loss on Ozempic explain why, and your prescriber can advise on your needs.

Frequently Asked Questions

Questions about a label? Contact us or read our Buyer’s Guide. Food comes first; follow the label and ask a healthcare provider before starting a supplement, especially if you take medicines, are pregnant or have a food allergy. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Last reviewed October 2026.

Related guides: High Protein Foods: USDA Values for Meat, Dairy and Plant Sources, Low Calorie Snacks: USDA Calories per Serving and 100-Calorie Portions, Healthy Snacks for Weight Loss: USDA Nutrition Table and What Research Shows, Greek Yogurt: USDA Nutrition, Protein and Greek vs Regular Yogurt.