Raw Tuna Nutrition Facts: Species, Portions and Product Form

    Raw tuna is a concentrated protein food, but its nutrition figures change with the species and the product you weigh. USDA FoodData Central's reference for fresh, raw yellowfin tuna gives 109 kcal, 24.4 g protein and 0.49 g fat per 100 g of edible fish. It reports no carbohydrate or dietary fiber. Those figures describe that named reference food; they are not a universal analysis of bluefin, bigeye, albacore, seasoned tuna or every frozen loin.

    For a useful calculation, match three things: the species, the preparation state and the edible portion weight. A 120 g raw yellowfin portion uses a multiplier of 1.2. A 120 g cooked steak needs an appropriate cooked entry or a recipe calculation. A frozen carton containing packaging, glaze or portions requiring trimming needs a usable-weight assessment before its purchase weight can become a serving weight.

    Raw is a measurement state, not a sashimi approval. You can use raw composition data to plan ingredients that will subsequently be cooked. A decision to serve uncooked fish requires a separate seafood safety assessment.

Raw yellowfin tuna nutrition per 100 g

    The following selected values come from USDA FoodData Central entry 175159, "Fish, tuna, fresh, yellowfin, raw." The basis is 100 g of edible raw fish without added ingredients. This is a comparison reference, not a finished product label. Keeping a shorter, traceable table is more useful than filling every possible nutrient row with numbers from different species or preparation methods.

    Keep grams, milligrams and micrograms distinct when you transfer a number into a calculation. A microgram is one thousandth of a milligram. Selenium and vitamin B12 therefore belong in different units from sodium, and converting them incorrectly can produce a result that looks precise but is wrong by a factor of a thousand.

    Leave unreported nutrients blank. An empty database field and a measured zero have different meanings, so filling gaps with zero creates information the source never supplied.

    You may find another reputable table with a different value. First compare its full food description and record identifier, then its source and update basis. An older database extract, another species or a branded product can explain the difference. Do not average conflicting figures merely to obtain one convenient number. For a product specification, preserve the record used and explain why its food description matches the ingredient.

    We would begin a frozen ingredient comparison with that description rather than the biggest protein number on a sales sheet. "Tuna loin" leaves important questions open: which species, which cut, what ingredients, what weight basis and what intended preparation? Those details determine whether two quoted nutrition panels are comparable. Resolve identity before discussing which panel appears nutritionally stronger.

Why species and cut belong beside the figures

    Tuna is a group of fish, not one uniform ingredient. Yellowfin, bluefin, bigeye and albacore should not be treated as interchangeable names in a purchasing specification. NOAA describes yellowfin as leaner than bluefin. The practical implication is that a lean yellowfin reference is a poor shortcut for estimating the fat and energy in a visibly fatty belly portion from another species.

    Record the scientific name alongside the commercial name when setting up a seafood ingredient. A menu name or a broad carton description may be too imprecise for matching the product to a composition record. Where the same common name covers different commercial fish, ask the supplier to resolve the identity on the specification and supporting documents. Carry that identity into the recipe file so a substitution triggers review.

    Cut also changes the purchasing question. A trimmed loin, a steak, a belly portion and small pieces can have different trimming needs and portioning behavior even before you consider nutrition. Use photographs to discuss color, shape and visible trim. Establish species identity from the product records, composition from a suitable data source or analysis, and raw-use suitability through the relevant safety assessment.

    For us, the useful next step is a sample put through the preparation process you intend to use. Record the portions obtained, the offcuts and the liquid discarded. Compare the result with the supplier's description. A kitchen making evenly sized steaks may judge that sample differently from a processor using small cooked pieces; ask for the cut that suits the work.

    The broader frozen fish range can help identify other product forms for a seafood menu. A category listing alone should never be read as confirmation of a particular tuna species, cut or raw-consumption program. Put those details in the request so the response addresses the actual ingredient you plan to use.

Protein, B12 and selenium in the whole meal

    Plain tuna can supply the protein component of a meal. Protein provides amino acids used in body tissues and normal functions. Its contribution belongs within the person's overall diet; a serving on its own promises neither muscle gain nor weight loss.

    Vitamin B12 supports normal blood and nerve cells and is involved in making DNA, as explained by NIH. Selenium has roles in thyroid function and protecting cells from damage. These are ordinary nutrient functions. Choose portions within a varied diet instead of increasing tuna intake just to maximize one vitamin or mineral.

    Tuna's lack of dietary fiber is equally relevant when planning a plate. Include appropriate vegetables, beans or whole grains across the meal rather than expecting the fish to provide everything. If you serve cooked broccoli alongside it, our cooked broccoli nutrition guide shows why the side dish's salt and drained-weight basis also need attention. Each component requires its own matching record.

    Oil, dressing, rice, vegetables and toppings turn a tuna portion into a different nutritional calculation. Record how much of each ingredient is actually served. Oil put into a pan and oil retained in the finished dish are different quantities; a production method should establish a defensible retention basis. Likewise, a marinade recipe and the amount retained by the fish need not be the same.

    This is especially useful for menu comparisons. Two dishes can contain the same tuna portion but differ considerably in their other ingredients. Compare the complete portions you sell, including dressings supplied separately when they are normally used. Describe optional additions clearly. A raw-fish table is a component record, and using it as the total for a finished bowl would leave out much of the recipe.

Calculate the portion before comparing raw and cooked

    The basic calculation is nutrient per 100 g multiplied by edible portion weight in grams, divided by 100. Weigh the fish at the same state as the reference. Raw weight pairs with raw data. For a cooked portion, use a matching cooked entry or a documented recipe calculation that accounts for the preparation method. Writing the state beside the weight prevents a common but hard-to-spot error.

    Worked example: Suppose a foodservice kitchen allocates 120 g of plain raw yellowfin to each cooked lunch plate. Using the stated reference, the raw ingredient contributes 109 × 120 ÷ 100 = 130.8 kcal and 24.4 × 120 ÷ 100 = 29.28 g protein before preparation. Record those as ingredient estimates. Add the other recipe components and apply the kitchen's appropriate cooked-recipe method before issuing a finished-meal declaration.

    Now suppose the kitchen instead specifies 120 g after cooking. That is a different calculation: the cooked portion may have started heavier because preparation changes water content.

    Weigh both stages in a representative run to establish yield, then use an appropriate cooked-food or recipe method for composition. The scales reveal the mass change; assessing how much of each nutrient remains takes additional data. Keep both records with the preparation instructions so a future portion change can be calculated on the same basis.

    Use a stable procedure for that trial: the same cut, portion thickness, starting state, equipment and endpoint. Record added ingredients and what is discarded. If another shift changes the portion thickness or drains the fish differently, repeat the comparison before assuming the result still applies. The aim is a recipe that other operators can reproduce, not a single favorable plate selected for a photograph.

    For procurement, keep purchase yield and recipe nutrition in separate fields. A yield result helps calculate how much ingredient to order and the cost of usable portions. A nutrient record helps estimate composition on its stated basis. One supports the other, but neither substitutes for the other. This separation becomes particularly valuable when a quoted pack weight includes material that never reaches the customer's plate.

Frozen loins, thawed weight and the portion plan

    Frozen tuna introduces another weight transition. The order quantity, net declared quantity, deglazed fish weight, thawed weight and trimmed serving weight are different concepts. Ask which basis applies to each commercial figure. If glaze is present, define the measurement method before comparing offers. Otherwise, a lower price per purchased kilogram can mask a higher cost per usable kilogram.

    At XMSD, we would keep the incoming specification and the kitchen trial together when reviewing a frozen-food requirement. A sample that cuts neatly into the intended portions is informative; a sample assessed only while frozen leaves thaw behavior unresolved. The trial should record the same thaw method, draining period and trimming rule for every candidate. That makes the results useful for selection instead of merely descriptive.

    Practical example: Suppose a catering operation tests 10.0 kg of deglazed raw tuna using an agreed refrigerated-thaw and trimming procedure. It records 9.2 kg of usable raw fish. The illustrative yield is 9.2 ÷ 10.0 × 100 = 92%. At 120 g raw fish per portion, that quantity allows 76 complete portions, with 80 g remaining. The action is to plan purchasing from the measured usable yield and portion rule, not to budget 83 portions from the starting weight.

    That 92% is illustrative, not a promised supplier result or a normal tuna yield. A second candidate might give more usable fish yet produce less even portions. For a plated meal, compare portion appearance, trim suitability, labor and usable cost together. Give any offcuts an agreed destination and value in a separately controlled recipe; otherwise, count them as loss for this application.

    The commercial pack should fit the preparation schedule. Opening a pack much larger than one controlled production run creates an extra holding and identification task. Smaller inner packs may simplify portion planning but change packaging use and handling time. Our frozen-food packaging information illustrates packaging options; the final material and format for fish require their own product and use assessment.

Raw-use safety needs its own evidence

    FDA recommends cooking seafood thoroughly to reduce foodborne-illness risk. Its consumer guidance gives 145°F, approximately 63°C, for most seafood and explains that freezing leaves some harmful germs alive. People who are pregnant, children, older adults and people with weakened immune systems should avoid raw or undercooked seafood.

    For a commercial raw-use program, identify the species and product process, then obtain the applicable hazard assessment and controls from qualified seafood personnel. A general frozen-food quality certificate, an attractive red color or a nutrition table is not a raw-use release decision. The approved intended use must match what the kitchen actually does, including any lightly seared preparation that leaves the center raw.

    Tuna also needs attention to histamine. FDA explains that histamine can accumulate after improper chilling and cannot be removed by washing, freezing or heating once formed. That means an acceptable cooking plan does not repair an earlier histamine-control failure. Handle a questionable lot through the established hold-and-investigate process instead of directing it to a cooked dish as an improvised solution.

    Keep the records connected to the lot. Temperature history, receiving observations, supplier identity, lot markings and relevant testing each answer part of the question. A cold reading at arrival describes just that moment. Where records conflict, identify the missing interval or handoff and obtain a disposition from the responsible food-safety function before release.

    These decisions have a useful commercial consequence: the purchase specification can distinguish fish intended for thorough cooking from fish assessed for a particular raw-use operation. The distinction should survive handoffs between purchasing, storage and kitchen staff. If the intended use changes, review the suitability again. A verbal substitution during a busy service should not silently change the control assumptions behind the original approval.

Mercury advice depends on the tuna category

    Species matters for dietary advice as well as composition. FDA and EPA place yellowfin and albacore tuna in their "Good Choices" category, canned light tuna including skipjack in "Best Choices," and bigeye tuna in "Choices to Avoid." This chart specifically guides people who might become or are pregnant or breastfeeding, and children; it is not a species-blind daily tuna allowance.

    For adults covered by that advice, a serving is 4 ounces measured before cooking. The recommendation is two to three weekly servings from Best Choices, or one serving from Good Choices. Use the chart's age-specific portions for children. Someone following a medically prescribed diet should discuss fish selection with their clinician or dietitian rather than deriving a schedule from the protein figure alone.

    The purchasing implication is straightforward: keep a species substitution visible. Replacing one tuna category with another can change the dietary message even when the recipe name and portion weight stay the same. Do not carry over an old consumer-facing statement simply because both products arrive as frozen loins. Recheck the wording against the actual fish and the population being addressed.

    Place this decision at recipe approval. Servers need a clear approved ingredient name and dietary message, while the person maintaining that information needs notice when purchasing changes the fish. Attach the revised specification to that notice so the review starts with the actual replacement.

    Selenium content is no reason to set aside mercury advice. Use the composition table for nutrient contribution and the applicable fish-consumption guidance for species and frequency. Together they support a proportionate choice: which fish, how much, and how often for the intended person.

Keep the label, recipe and shipment records aligned

    An ingredient record should make it possible to trace a figure back to the food it describes. Retain the product name, scientific name, ingredients, state, units, calculation basis and source version with the recipe. If the value comes from analysis, keep the sample description and lot relationship. If it comes from a reference database, record that fact so it is not later mistaken for a test of the delivered product.

    For a private-label project, decide which product state the intended declaration covers before requesting nutrition work. A plain frozen loin, a seasoned steak and a prepared bowl need different supporting records. Establish which processing and recipe changes trigger a review, such as a species substitution, a new marinade or a different portion size. Label approval should follow the final product specification and destination-market requirements.

    The label's physical design matters too. An inner pack should remain identifiable after it is separated from the master carton. Lot and product information that exists only on a discarded outer box is less useful during preparation. Review the actual pack arrangement and the kitchen handoff, including where staff retain the ingredient information while a batch is in use.

    Agree what the trial will evaluate before the sample arrives. Record identity and document checks, portioning results and the safety-release decision separately, with a named owner for any discrepancy.

    Sample approval then means something specific. The commercial shipment can be compared with a defined product and preparation record, and a changed cut or species has an obvious route for review. Retain enough information to explain a rejection as clearly as an acceptance; "looked different" is much less useful than a recorded mismatch in trim, portion size or identity.

    The same logic applies when coordinating the fish with vegetable sides, grains and sauces in foodservice and catering applications. Each ingredient has its own preparation and weight basis, while the finished meal needs one consistent portion plan. Keep the recipe practical enough that production staff can follow it and specific enough that purchasing changes are visible.

    The useful nutrition answer starts with a named fish and ends with a defined portion. Keep raw yellowfin reference values attached to that food, use a matching calculation for the served product, and preserve species and preparation information through purchasing and kitchen use. Those choices make the numbers useful for a meal plan, a sample comparison and a product discussion without asking a generic tuna table to do all three jobs.

References

• USDA FoodData Central: Fish, tuna, fresh, yellowfin, raw (175159)
• NOAA Fisheries: Atlantic Yellowfin Tuna
• NIH: Vitamin B12 Fact Sheet for Consumers
• NIH: Selenium Fact Sheet for Consumers
• FDA: Selecting and Serving Fresh and Frozen Seafood Safely
• FDA: Final Compliance Policy Guide for Scombrotoxin-forming Fish, November 2024
• FDA and EPA: Advice about Eating Fish