LimitBased on CKD stage 3-4 daily limits, Fish is rated Limit - Phosphorus reaches 27% of its limit, approaching the 30% caution line.
Phosphorus / Sodium / Potassium (rating basis)
Phosphorus270 mg27%
High
Sodium61 mg3%
Low
Potassium450 mg22%
Moderate
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
On the phosphorus angle (27%), Fish belongs in the watch category. Pairing it with low-phosphorus sides like white rice or egg whites balances the meal.
Other nutrients
Protein23.8 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.
On a CKD stage 3-4 basis, Fish is Limit, with risk mainly coming from Phosphorus (27%). Data is for reference and is not medical advice.
Why is Fish rated Limit?
Simply put: among Fish's three minerals, Phosphorus is highest (270 mg, 27%), and by the tier rule (25-30%) the result is Limit.
How much Phosphorus is in Fish?
Per 100 g, Fish provides Phosphorus 270 mg, compared with the CKD stage 3-4 limit of 1,000 mg (27%).
Is Fish safe on a low-potassium diet?
On a low-potassium plan, Fish exceeds the 300 mg reference, showing 450 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 (270 mg per 100 g) than the group average. Individual needs still decide what fits your plan.