ModerateBased on CKD stage 3-4 daily limits, Fish is rated Moderate - Phosphorus is the top contributor at 20% of its limit, within the 15-25% band.
Phosphorus / Sodium / Potassium (rating basis)
Phosphorus200 mg20%
Moderate
Sodium62 mg3%
Low
Potassium269 mg13%
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
On the phosphorus angle (20%), Fish belongs in the watch category. Pairing it with low-phosphorus sides like white rice or egg whites balances the meal.
Other nutrients
Protein19.4 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 Moderate: Phosphorus is 20% 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 (200 mg) equals 20% of the limit, sitting in the 15-25% band - that is why it rates Moderate.
How much Phosphorus is in Fish?
Per 100 g, Fish provides Phosphorus 200 mg, compared with the CKD stage 3-4 limit of 1,000 mg (20%).
Is Fish safe on a low-potassium diet?
On a low-potassium plan, Fish falls below the 300 mg reference, showing 269 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 less on Phosphorus (200 mg per 100 g) than the group average. Individual needs still decide what fits your plan.