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Soy protein isolate

Per 100 g edible portion
Legumes & Nuts
Higher riskMeasured against KDIGO/KDOQI daily limits, Soy protein isolate is Higher risk: the highest item, Phosphorus, is at 78% of its limit, above 30%.

Phosphorus / Sodium / Potassium (rating basis)

Phosphorus776 mg78%
High
Sodium1005 mg50%
High
Potassium81 mg4%
Low

About this food

Soy protein isolate is a common member of Legumes & Nuts. Legumes and nuts are typically high in both phosphorus and potassium, so they need care. Plant phosphorus absorbs at a lower rate (30-50%), so the real load is smaller than the numbers suggest. This helps when choosing similar foods.

Nutrient insight

Phosphorus at 78% is the highest item. Additive phosphorus in processed foods absorbs best; naturally occurring phosphorus is more controllable.

Other nutrients

Protein88.3 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
Purine36.1 mgLow purineNot rated · category estimate
Oxalate28.5 mgLow oxalateNot rated · category estimate
Phosphorus source: Natural plant source (lower absorption) · Potassium form: Whole food

Practical tips

If you are managing mineral intake: Cook legumes and discard the water to lower some minerals; keep nuts to a small handful.

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Related guides

Legumes & NutsHigher risk foodsHigh fiber foodsLow phosphorus foods

Frequently asked questions

Is Soy protein isolate safe for kidney disease?

Combining phosphorus, sodium and potassium, Soy protein isolate falls in the Higher risk tier, with Phosphorus (78%) contributing the most. Plan meals with your doctor's guidance.

Why is Soy protein isolate rated Higher risk?

The deciding factor is Phosphorus: 776 mg, 78% of the limit, in the >30% band - so Soy protein isolate is rated Higher risk.

How much Phosphorus is in Soy protein isolate?

Soy protein isolate's Phosphorus content is 776 mg per 100 g - 78% of the daily limit of 1,000 mg.

Is Soy protein isolate safe on a low-potassium diet?

If you are on a potassium-restricted diet, Soy protein isolate falls below 300 mg per 100 g - Potassium comes in at 81 mg. Always verify against your own daily limit.

How does Soy protein isolate compare to other legumes & nuts foods?

How does Soy protein isolate compare within Legumes & Nuts? Its Phosphorus (776 mg per 100 g) is more than the category average. The rating below is calculated from this food's own data.