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Fish, tuna, skipjack, fresh, cooked, dry heat

Per 100 g edible portion
Meat & Protein
LimitFish receives a Limit rating. Phosphorus at 28% of its limit is the highest of the three, so keep servings small.

Phosphorus / Sodium / Potassium (rating basis)

Phosphorus285 mg28%
High
Sodium47 mg2%
Low
Potassium522 mg26%
High

About this food

In a CKD diet, Meat & Protein deserve attention: Fish - 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

Phosphorus leads at 28%. In CKD, track phosphorus intake and factor in the source (Animal source (higher absorption)) to judge the true burden.

Other nutrients

Protein28.2 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

How to eat it more safely: Boiling meat first and discarding the water removes some phosphorus and potassium; prefer low-phosphorus proteins like egg whites.

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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 (28% of limit). This site presents data, not medical judgment.

Why is Fish rated Limit?

The reason: Phosphorus (285 mg, 28%) is the most prominent of Fish's three minerals, at the 25-30% level, which maps to Limit.

How much Phosphorus is in Fish?

In every 100 g of Fish, Phosphorus is about 285 mg - roughly 28% of the daily limit (1,000 mg).

Is Fish safe on a low-potassium diet?

For people watching potassium, Fish exceeds 300 mg per 100 g, with Potassium at 522 mg. Confirm your personal limit with your nephrologist or renal dietitian.

How does Fish compare to other meat & protein foods?

Against the Meat & Protein average, Fish shows more Phosphorus (285 mg per 100 g). The tier shown here comes from its own numbers, not the category.