Tuna (Plain, Canned in Oil, Drained)

TLDRLast updated 7 October 2026

Tuna (Plain, Canned in Oil, Drained): the low FODMAP reference is 100 g. Drain off the packing oil before weighing. The reference is 100 g of drained tuna, not the total can weight.

Serving sizes for tuna (plain, canned in oil, drained)

Drain off the packing oil before weighing. The reference is 100 g of drained tuna, not the total can weight. The visual guide shows one 100 g drained portion; weigh the fish rather than counting cans.

Low
100 gabout 1 100 g drained portion

Component quantities are not available for this reference.

Reference portions

Select an amount or rating to update your portion. These are reference portions, not exact cut-offs or recommended intakes.
Reference portions for Tuna (Plain, Canned in Oil, Drained) and their FODMAP ratings
ServingAmountFODMAP rating
100 g drained fish
Reference portionNot availableModerate
Reference portionNot availableHigh

Is tuna (plain, canned in oil, drained) low FODMAP?

The low FODMAP reference is 100 g of this plain fish after draining. No moderate or high reference is supplied. This reference applies to the named packing liquid and preparation.

Tuna (Plain, Canned in Oil, Drained) and IBS: what to know

Plain fish is generally low in FODMAPs, while ingredients added to fish products can change the assessment. Read the background guidance. This background does not establish the exact reference weights.

Gut-friendly ways to eat tuna (plain, canned in oil, drained)

Drain off the packing oil before weighing. The reference is 100 g of drained tuna, not the total can weight. Check flavoured products for added garlic or onion. Compare Tuna (Plain, Canned in Brine, Drained) for its own preparation and portions.

Frequently asked questions

What are the FODMAP portions for tuna (plain, canned in oil, drained)?

The low FODMAP reference is 100 g after draining. It applies to this named packing liquid and preparation.

How should I measure the portion?

Drain off the packing oil before weighing. The reference is 100 g of drained tuna, not the total can weight.

Can I use the same reference for another preparation?

Use the reference for the food you have. Compare Tuna (Plain, Canned in Brine, Drained); do not transfer these amounts to another preparation automatically.

Check a whole plate in seconds.

Not sure about a whole meal? Scan it with the Gut Friendly app.

Get the app

Sources and editorial notes

Published and maintained by Gut Friendly. This guide has not been independently reviewed by a dietitian. Serving information comes from our food catalogue. Where references are listed, they explain the research and preparation differences. Check the original source for current portions.

Gut Friendly provides general information, not medical advice.