Is tuna high in oxalate?
A
No. Very low, 1 mg per 3.5 oz canned
Range <1 to 1.5 mg across 1 study, 100 g serving
0 mg50 mg = a day60 mg+
Tuna is low in oxalate: about 1 mg per 3.5 oz canned, which is 2% of the 50 mg a day many stone clinics aim for, or 1% of the 100 mg others allow.
50 or 100 mg a day: which target is yours
Where this number comes from
Each row is one published measurement, converted to a 100 g serving (3.5 oz canned). The grade and the range use the rows prepared the way the serving is eaten, and take the middle. How the grades work.
| Per serving | Per 100 g | Preparation | Source |
|---|---|---|---|
| <1 mg | 0.4 mg | White, canned in water | Harvard T.H, 2023 |
| 1.5 mg | 1.5 mg | Light, canned in water | Harvard T.H, 2023 |
By Oliver Silen · Data checked November 2, 2026 · Not medical advice