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Fish, mackerel, spanish, cooked, dry heat

Per 100 g edible portion
Meat & Protein
LimitFish's Potassium takes up 28% of the daily limit, earning a Limit rating - an occasional, small portion only.

Phosphorus / Sodium / Potassium (rating basis)

Phosphorus271 mg27%
High
Sodium66 mg3%
Low
Potassium554 mg28%
High

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 potassium is the top contributor (28% of its limit), so its potassium density deserves attention. In CKD stage 3-4 the kidneys clear potassium less well - control portions, and peeling, slicing or boiling can help.

Other nutrients

Protein23.6 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.

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Related guides

Meat & ProteinLimit foodsLow potassium foodsLow phosphorus foods

Frequently asked questions

Is Fish safe for kidney disease?

Fish is rated Limit: Potassium is 28% of the CKD stage 3-4 limit, the highest item. Individual needs should be discussed with your healthcare team.

Why is Fish rated Limit?

Fish's Potassium content (554 mg) equals 28% of the limit, sitting in the 25-30% band - that is why it rates Limit.

How much Potassium is in Fish?

Per 100 g, Fish contains Potassium 554 mg, which is 28% of the CKD stage 3-4 daily limit (2,000 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 554 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 Potassium - 554 mg per 100 g on record. Ratings on this site always use the food's own measured values.