LimitUsing CKD stage 3-4 limits, Fish falls in the Limit tier - Phosphorus (25%) is the main driver.
Phosphorus / Sodium / Potassium (rating basis)
Phosphorus252 mg25%
High
Sodium61 mg3%
Low
Potassium384 mg19%
Moderate
About this food
About 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. As a Meat & Protein item, its role in a kidney diet depends mainly on mineral content.
Nutrient insight
Fish's phosphorus is 25% of the limit, from Animal source (higher absorption). On a phosphorus-restricted diet, limit how often and how much you eat it.
Other nutrients
Protein22.1 gNot rated; needs attention at stage 4-5
Fiber0 gBeneficial for CKD (core plant-based nutrient)
Combining phosphorus, sodium and potassium, Fish falls in the Limit tier, with Phosphorus (25%) contributing the most. Plan meals with your doctor's guidance.
Why is Fish rated Limit?
The deciding factor is Phosphorus: 252 mg, 25% of the limit, in the 25-30% band - so Fish is rated Limit.
How much Phosphorus is in Fish?
Data: 100 g of Fish has Phosphorus 252 mg (25% of the 1,000 mg limit).
Is Fish safe on a low-potassium diet?
Low-potassium question: Fish exceeds the 300 mg threshold (Potassium 384 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 Phosphorus at 252 mg per 100 g. Use your own daily limits, not category labels, as the guide.