Oxalate <25 mg/serving
Oxalate 25-99 mg/serving
Oxalate ≥100 mg/serving
📊 Nutrition at a Glance
⚠️ Moderate Sodium
Tuna has 377 mg sodium per 100g. While not critically high, kidney stone patients should monitor sodium intake as excess can raise urinary calcium.
📏 High Animal Protein
Tuna contains animal protein (about 23g 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 |
|---|---|---|---|
| 3 oz | 85 g | 0 mg | Safe |
| 2 x 3 oz | 170 g | 0 mg | Safe |
| ½ x 3 oz | 42 g | 0 mg | Safe |
🏷️ Tags
🟢 See all Seafood rated Safe for kidney stones →
🔗 Related Foods
🟢 Safe alternatives (recommended)
❓ Frequently Asked Questions
Is Tuna safe for kidney stones?
Short answer: yes. Longer answer: at 0 mg per 3 oz, Tuna is one of the safer things you can eat if you're watching oxalate. Harvard T.H. Chan SPH measured this directly.
What's the oxalate content of Tuna?
The lab result: 0 mg per 3 oz (85g serving). That's 0 mg per 100g. Harvard's ion chromatography analysis, 2024. Not crowdsourced, not estimated.
Is Tuna a high-oxalate food?
Low. 0 mg per 3 oz puts Tuna firmly in the low-oxalate category. Safe for regular eating if you're managing kidney stones.
What are the best low-oxalate alternatives to 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.
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.
How much sodium does Tuna have?
Sodium's not the issue here. Tuna has 377 mg per 100g — comfortably low. No need to worry about salt pushing extra calcium into your urine with this food.