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Fish, tuna, white, canned in oil, without salt, drained solids

Per 100 g edible portion
Meat & Protein
LimitFish's Phosphorus takes up 27% of the daily limit, earning a Limit rating - an occasional, small portion only.

Phosphorus / Sodium / Potassium (rating basis)

Phosphorus267 mg27%
High
Sodium50 mg2%
Low
Potassium333 mg17%
Moderate

About this food

How to think about Meat & Protein: Fish is worth a closer look - Animal proteins tend to be higher in phosphorus, and animal phosphorus absorbs at 60-80% versus 30-50% for plants. Choosing low-phosphorus proteins such as egg whites or tofu, or controlling portions of red meat, is a common CKD approach.

Nutrient insight

Fish's phosphorus is the top contributor (27% of its limit). Source matters: animal phosphorus absorbs at 60-80%, additive phosphorus near 100% - the same number can mean very different real loads.

Other nutrients

Protein26.5 gNot rated; needs attention at stage 4-5
Fiber0 gBeneficial for CKD (core plant-based nutrient)
Alcohol0 gAlcohol-free
Purine93.1 mgModerate purineNot rated · category estimate
Oxalate1.5 mgLow oxalateNot rated · category estimate
Phosphorus source: Animal source (higher absorption) · Potassium form: Whole food

Practical tips

Practical tip: Boiling meat first and discarding the water removes some phosphorus and potassium; prefer low-phosphorus proteins like egg whites.

Related foods

porkKidney-friendlybeefKidney-friendlypectinKidney-friendlyoilKidney-friendly

Related guides

Meat & ProteinLimit foodsLow potassium foodsLow phosphorus foods

Frequently asked questions

Is Fish safe for kidney disease?

Fish scores Limit on the phosphorus/sodium/potassium assessment, led by Phosphorus (27% of limit). This site presents data, not medical judgment.

Why is Fish rated Limit?

The reason: Phosphorus (267 mg, 27%) is the most prominent of Fish's three minerals, at the 25-30% level, which maps to Limit.

How much Phosphorus is in Fish?

Per 100 g, Fish contains Phosphorus 267 mg, which is 27% of the CKD stage 3-4 daily limit (1,000 mg).

Is Fish safe on a low-potassium diet?

On a low-potassium diet, Fish exceeds the 300 mg per 100 g reference point, providing 333 mg of Potassium. Treat this as a reference - your stage and labs decide the real target.

How does Fish compare to other meat & protein foods?

Compared with the typical Meat & Protein food, Fish has more Phosphorus - 267 mg per 100 g on record. Ratings on this site always use the food's own measured values.