Oxalate <25 mg/serving
Oxalate 25-99 mg/serving
Oxalate ≥100 mg/serving
📊 Nutrition at a Glance
⚠️ Moderate Sodium
Tuna has 402 mg sodium per 100g. While not critically high, kidney stone patients should monitor sodium intake as excess can raise urinary calcium.
📏 Moderate Animal Protein
Tuna contains animal protein (about 16g per 100g). The AUA recommends limiting non-dairy animal protein to 3 oz (palm-sized) per meal. Reference guide, not an official standard.
📏 Oxalate by Serving Size
| Serving | Weight | Oxalate | Verdict |
|---|---|---|---|
| 4 oz | 113 g | 0 mg | Safe |
| 2 x 4 oz | 226 g | 0 mg | Safe |
| ½ x 4 oz | 56 g | 0 mg | Safe |
🏷️ Tags
🟢 See all Seafood rated Safe for kidney stones →
🔗 Related Foods
🟢 Safe alternatives (recommended)
❓ Frequently Asked Questions
Can I eat Tuna with kidney stones?
Yep, you're good. Tuna clocks in at 0 mg oxalate per 4 oz — way under the 25 mg cutoff. Eat it without the stress. Measured by Harvard, not guessed.
What's the oxalate content of Tuna?
Quick math: 4 oz of Tuna = 0 mg oxalate. 100g = 0 mg. Both numbers come from Harvard's latest lab measurements. Not AI, not a database, actual lab work.
Is Tuna a high-oxalate food?
Low. 0 mg per 4 oz puts Tuna firmly in the low-oxalate category. Safe for regular eating if you're managing kidney stones.
What can I eat instead of Tuna?
Substitutes exist. The safe alternatives listed below are all low-oxalate foods in the same family as Tuna. Grab one of those and you dodge the oxalate while keeping similar flavors.
How much sodium does Tuna have?
Sodium's not the issue here. Tuna has 402 mg per 100g — comfortably low. No need to worry about salt pushing extra calcium into your urine with this food.
Does Tuna have a lot of animal protein?
Animal protein alert: Tuna contributes to your daily animal protein load. The connection to stones is real (higher uric acid, lower citrate). Moderation = ~3 oz per meal, not the whole plate.