LimitUsing CKD stage 3-4 limits, Fish falls in the Limit tier - Phosphorus (26%) is the main driver.
Phosphorus / Sodium / Potassium (rating basis)
Phosphorus256 mg26%
High
Sodium90 mg4%
Low
Potassium456 mg23%
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
On the phosphorus angle (26%), Fish belongs in the watch category. Pairing it with low-phosphorus sides like white rice or egg whites balances the meal.
Other nutrients
Protein24.2 gNot rated; needs attention at stage 4-5
Fiber0 gBeneficial for CKD (core plant-based nutrient)
A common practice is: Boiling meat first and discarding the water removes some phosphorus and potassium; prefer low-phosphorus proteins like egg whites.
Fish is rated Limit: Phosphorus is 26% 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 Phosphorus content (256 mg) equals 26% of the limit, sitting in the 25-30% band - that is why it rates Limit.
How much Phosphorus is in Fish?
Per 100 g, Fish provides Phosphorus 256 mg, compared with the CKD stage 3-4 limit of 1,000 mg (26%).
Is Fish safe on a low-potassium diet?
On a low-potassium plan, Fish exceeds the 300 mg reference, showing 456 mg of Potassium per 100 g. Individual targets vary by CKD stage and lab results.
How does Fish compare to other meat & protein foods?
Within Meat & Protein, Fish ranks more on Phosphorus (256 mg per 100 g) than the group average. Individual needs still decide what fits your plan.