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Fish, scup, raw

Per 100 g edible portion
Meat & Protein
ModerateBased on CKD stage 3-4 daily limits, Fish is rated Moderate - Phosphorus is the top contributor at 18% of its limit, within the 15-25% band.

Phosphorus / Sodium / Potassium (rating basis)

Phosphorus185 mg18%
Moderate
Sodium42 mg2%
Low
Potassium287 mg14%
Low

About this food

Fish belongs to the Meat & Protein category. 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 18% of the limit, from Animal source (higher absorption). On a phosphorus-restricted diet, limit how often and how much you eat it.

Other nutrients

Protein18.9 gNot rated; needs attention at stage 4-5
Fiber0 gBeneficial for CKD (core plant-based nutrient)
Sugar (total)0 gNaturally free of sugar
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

A handy approach - Boiling meat first and discarding the water removes some phosphorus and potassium; prefer low-phosphorus proteins like egg whites.

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Frequently asked questions

Is Fish safe for kidney disease?

Fish is rated Moderate: Phosphorus is 18% of the CKD stage 3-4 limit, the highest item. Individual needs should be discussed with your healthcare team.

Why is Fish rated Moderate?

Fish's Phosphorus content (185 mg) equals 18% of the limit, sitting in the 15-25% band - that is why it rates Moderate.

How much Phosphorus is in Fish?

Data: 100 g of Fish has Phosphorus 185 mg (18% of the 1,000 mg limit).

Is Fish safe on a low-potassium diet?

Low-potassium question: Fish falls below the 300 mg threshold (Potassium 287 mg per 100 g). Whether it fits depends on your daily potassium budget.

How does Fish compare to other meat & protein foods?

Next to other Meat & Protein options, Fish carries less Phosphorus at 185 mg per 100 g. Use your own daily limits, not category labels, as the guide.