How much potassium is in tofu firm and how does it fit stage 1?

Tofu Firm contains 130 mg potassium per 100g. At stage 1, your daily potassium budget is 3,000 mg — one standard serving (100g cooked) uses approximately 4% of that budget. This fits comfortably within the allowance.

What should stage 1 patients eat instead of tofu firm?

Safer alternatives for stage 1 include: Egg Whites, Tofu. Each is rated safe or caution at this stage with lower potassium or phosphorus per serving.

Proteins•View general guide

Is Tofu Firm Safe for Stage 1?

Q: Can tofu firm be eaten in stage 1 kidney disease?

Tofu Firm is rated SAFE for stage 1 (eGFR ≥90 mL/min/1.73m²). Tofu Firm is safe for stage 1 patients: potassium 130 mg/100g, phosphorus 111 mg/100g, and sodium 4 mg/100g all sit within the lenient thresholds for this stage. Normal portions (100g cooked) fit the daily 3,000 mg potassium budget comfortably.

GENERALLY LOWER CONCERN at this stage • eGFR ≥90 mL/min/1.73m²

Stage-specific rating derived from Tofu Firm's potassium, phosphorus, and sodium per 100g against stage 1 renal diet budgets.

Tofu Firm is safe for stage 1 patients: potassium 130 mg/100g, phosphorus 111 mg/100g, and sodium 4 mg/100g all sit within the lenient thresholds for this stage. Normal portions (100g cooked) fit the daily 3,000 mg potassium budget comfortably.

Stage 1 Budget Check

Potassium4% of daily

130 mg per 100g

Daily budget: 3,000 mg

Phosphorus11% of daily

111 mg per 100g

Daily budget: 1,000 mg

Sodium0% of daily

4 mg per 100g

Daily budget: 2,000 mg

Serving Advice at Stage 1

Standard serving (100g cooked) is fine. For very high-volume foods, keep to one serving per day.

Stage 1 Diet Rules

Stage 1 means normal filtration (eGFR ≥90) with kidney damage markers (albuminuria, hematuria, or structural changes). Most foods are fine in normal portions — the goal is protecting the kidneys you have.

No strict potassium restriction at stage 1 unless serum potassium is elevated (>5.0 mEq/L).
Focus on sodium <2,000 mg/day to protect blood pressure — the #1 progression driver.
Avoid NSAIDs (diclofenac, ibuprofen) — the most common avoidable kidney insult.
Keep protein moderate (0.8 g/kg/day); avoid high-protein fad diets.
Most foods rated 'avoid' here are extreme potassium/sodium outliers — still skip coconut water, dates, and pickle.

No fluid restriction unless swelling or heart failure — drink to thirst. Protein target: 0.8 g/kg/day.

Safer Alternatives at Stage 1

Egg Whites

safe

K+ 163mg • P 15mg

Tofu

safe

K+ 121mg • P 97mg

Explore Other Stages

Stage 2 • safe Stage 3 • caution Stage 4 • caution Stage 5 • caution

Tofu Firm in Stage 1: FAQs

Keep learning: Tofu Firm & stage 1

Food: Egg Whites Food: Tofu More Proteins foods Other Caution foods Foods in Japan

Know Your Stage?

Check your eGFR and get your full KDIGO classification — then browse foods rated for your exact stage.

eGFR Calculator All Foods

Is Tofu Firm Safe for Stage 1?

GENERALLY LOWER CONCERN at this stage • eGFR ≥90 mL/min/1.73m²

Stage-specific rating derived from Tofu Firm's potassium, phosphorus, and sodium per 100g against stage 1 renal diet budgets.

Stage 1 Diet Rules

No strict potassium restriction at stage 1 unless serum potassium is elevated (>5.0 mEq/L).
Focus on sodium <2,000 mg/day to protect blood pressure — the #1 progression driver.
Avoid NSAIDs (diclofenac, ibuprofen) — the most common avoidable kidney insult.
Keep protein moderate (0.8 g/kg/day); avoid high-protein fad diets.
Most foods rated 'avoid' here are extreme potassium/sodium outliers — still skip coconut water, dates, and pickle.

No fluid restriction unless swelling or heart failure — drink to thirst. Protein target: 0.8 g/kg/day.

Is Tofu Firm Safe for Stage 1?

Stage 1 Budget Check

Serving Advice at Stage 1

Stage 1 Diet Rules

Safer Alternatives at Stage 1

Egg Whites

Tofu

Explore Other Stages

Tofu Firm in Stage 1: FAQs

Keep learning: Tofu Firm & stage 1

Know Your Stage?

Educational information only

Sources and methodology

Is Tofu Firm Safe for Stage 1?

Stage 1 Budget Check

Serving Advice at Stage 1

Stage 1 Diet Rules

Safer Alternatives at Stage 1

Egg Whites

Tofu

Explore Other Stages

Tofu Firm in Stage 1: FAQs

Keep learning: Tofu Firm & stage 1

Know Your Stage?

Educational information only

Sources and methodology