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Fish, mackerel, salted

Per 100 g edible portion
Meat & Protein
Higher riskBased on CKD stage 3-4 daily limits, Fish is rated Higher risk - Sodium exceeds 222% of its limit, past the 30% warning line.

Phosphorus / Sodium / Potassium (rating basis)

Phosphorus254 mg25%
High
Sodium4450 mg222%
High
Potassium520 mg26%
High

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 sodium is 222% of the limit, the highest of the three. Herbs and lemon are practical salt substitutes.

Other nutrients

Protein18.5 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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Related guides

Meat & ProteinHigher risk foodsLow potassium foodsLow phosphorus foods

Frequently asked questions

Is Fish safe for kidney disease?

Combining phosphorus, sodium and potassium, Fish falls in the Higher risk tier, with Sodium (222%) contributing the most. Plan meals with your doctor's guidance.

Why is Fish rated Higher risk?

The deciding factor is Sodium: 4450 mg, 222% of the limit, in the >30% band - so Fish is rated Higher risk.

How much Sodium is in Fish?

Data: 100 g of Fish has Sodium 4450 mg (222% of the 2,000 mg limit).

Is Fish safe on a low-potassium diet?

Low-potassium question: Fish exceeds the 300 mg threshold (Potassium 520 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 more Sodium at 4450 mg per 100 g. Use your own daily limits, not category labels, as the guide.