Are raisins high in oxalate?
A
No. Very low, 3.5 mg per 1/4 cup
Range 3.4 to 3.5 mg across 2 studies, 40 g serving
0 mg50 mg = a day60 mg+
Raisins are low in oxalate: about 3.5 mg per 1/4 cup, which is 7% of the 50 mg a day many stone clinics aim for.
Where this number comes from
Each row is one published measurement, converted to a 40 g serving (1/4 cup). 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 |
|---|---|---|---|
| 3.4 mg | 8.5 mg | Dried (n=1) | Hönow R., Hesse A, 2002via Foods 2023;12:3201, Table 5 (CC BY 4.0) |
| 3.5 mg | 8.8 mg | Not stated | Harvard T.H, 2023 |
By Oliver Silen · Data checked November 2, 2026 · Not medical advice