For an older adult, choose tinned tuna by the protein and salt figures on the exact product, its drained weight and whether the portion is practical to use. A smaller no-drain tin can mean less preparation, while separate tins may make regular use easier to manage; neither format establishes its salt content. NHS guidance also says tinned tuna does not count towards the recommended oily-fish portion.
Someone with a smaller appetite, or a carer planning their meals, may want to compare how much protein a usable portion provides. Royal United Hospitals Bath NHS Foundation Trust guidance identifies protein as a nutrient deserving attention after age 65.
Anyone who eats tuna regularly or has been advised to moderate salt intake needs the figure on the exact tin. Spring-water products can have different salt values, so the packing liquid alone is not enough to make the choice.
Smaller portions and no-drain formats may be useful when handling a tin or managing leftovers is difficult. Check the opening method and storage instructions for the particular product rather than assuming every pack works the same way.
Start with the amount likely to be eaten, then compare protein and salt on the same labelled basis. Pack format matters most when draining or using leftovers would be difficult.
| Concern | What to check | Who this matters to |
|---|---|---|
| Protein per portion | Compare protein per 100g drained and the amount of tuna likely to be eaten. | With a smaller appetite, I want the tuna I serve to make a useful contribution to a meal. About 40% of consumers put protein first. |
| Salt on the label | Check salt per 100g and per serving on the exact tin; note whether the figure is for drained tuna. | If I eat tuna often or have been advised to moderate salt, its packing liquid cannot tell me enough. Salt is the primary concern for about 30% of consumers. |
| Portions and preparation | Check drained weight, whether draining is needed and the instructions for opened leftovers. | When shopping for one or preparing someone else’s meal, I need a portion I can handle and use within the storage period. Roughly 30% of consumers put that practical fit first. |
Sainsbury’s lists 26.1g protein and 0.12g salt per 100g drained for one 145g spring-water tuna product. Marks & Spencer lists 23.5g protein and 0.75g salt per 100g for its spring-water chunks. These product-specific figures show why it is worth reading the panel rather than treating “in spring water” as a salt figure.
Salt differs between products packed in spring water. The Sainsbury’s and Marks & Spencer examples above have different labelled values, and neither value describes every product from that brand.
Compare salt on the exact pack using matching per-100g figures, then look at the serving you expect to use.
A tin’s total weight can include packing liquid, so it need not equal the amount of tuna available for a meal.
Check drained weight and pack count, then choose a portion size that fits how the tuna will be used.
NHS guidance says fresh and canned tuna do not count as oily fish, although tuna can be one of the fish choices in a weekly diet.
If following the NHS recommendation to include an oily-fish portion, plan that portion separately rather than relying on tinned tuna for it.
Instructions differ by product: Sainsbury’s says to transfer leftovers from its 145g spring-water tin, refrigerate them and use them within one day; a Marks & Spencer spring-water product specifies two days after opening.
Match tin size to usual servings and follow the storage directions on the tin being opened.
A larger opened portion may go to waste if it cannot be used within its stated storage period.
Its range includes no-drain tuna in smaller portions for shoppers who want fewer preparation steps.
A spring-water chunks option is available in separate 145g tins within a multipack.
Its own-label range provides different tuna formats for comparing portion size and packing liquid.
Its 145g spring-water chunks provide product-specific nutrition and leftover-storage information.
Its referenced products include spring-water chunks and ready-drained spring-water steak.
These tins cover smaller no-drain portions, spring-water multipacks and a brine-packed steak. Compare the label and preparation instructions for the pack that fits the intended meals.
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For meals where draining is inconvenient, this pack provides three separate tins. Check its salt declaration and the portion used if tuna is eaten regularly.
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This smaller flavoured tin may fit a meal needing a single portion. The product information lists sunflower oil and sugar, so check the ingredients and nutrition panel against the intended meal.
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Separate tins may suit someone using tuna across several meals without opening the whole multipack at once. Compare the salt figure on this product’s label; spring water does not establish its salt content.
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Six separate tins may fit a household that uses tuna regularly. Consider whether each opened tin suits the usual portion and follow its instructions for refrigerating leftovers.
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This tin fits a meal in which the tuna will be cooked. Its product instructions call for thorough cooking, so do not treat it as ready to eat; check the label’s basis before comparing its nutrition figures with drained-weight figures on other tins.
No. NHS guidance says fresh and canned tuna do not count as oily fish. Its recommendation to include an oily-fish portion therefore needs a different fish choice.
No. Sainsbury’s lists 0.12g salt per 100g drained for one spring-water product, while Marks & Spencer lists 0.75g per 100g for its spring-water chunks. Compare the exact product labels on the same basis, including the serving likely to be eaten.
Follow the instructions on the particular tin. Sainsbury’s says to transfer leftovers from its 145g spring-water product to a non-metallic container, refrigerate and use within one day; the referenced Marks & Spencer spring-water chunks specify refrigeration and use within two days.
Check the exact product label and the food before serving: a Marks & Spencer tuna-steak label warns that bones may remain. Also check ingredients where fish allergy is a concern; tuna is fish.