Purine content of Sweet potato
Across the 4 sweet potato measurements in this database, purine content runs from 13 to 24 mg per 100 g, with a median of 18 mg — a low-purine food.
On this page (4)
Why the numbers vary
The grains and staples measured here run from 1 mg to 75.9 mg per 100 g, so the category is a poor guide on its own — which specific food, and prepared how, decides almost everything.
All 4 measurements land within 11 mg of each other, so preparation makes little practical difference here — unusual, and convenient.
Every form of sweet potato measured (4)
Highest first, each with the preparation that was measured.
| Food as measured | Per 100 g | Level | Source |
|---|---|---|---|
| Sweet potato (purple) | 24 mg | Low | NHC 2024 |
| Sweet potato (red) | 19 mg | Low | NHC 2024 |
| Sweet potato, raw | 17 mg | Low | ODS-NIH 2.0 |
| Sweet potato | 13 mg | Low | NHC 2024 |
Questions about sweet potato and purines
Is sweet potato high in purines?
Median 18 mg per 100 g, sweet potato falls in the low band (under 30 mg per 100 g) on the six-level scale used across this site. Individual measurements range from 13 to 24 mg.
How many purines are in a serving of sweet potato?
It depends entirely which preparation. Compared at the same 150 g: about 20 mg for sweet potato, about 36 mg for sweet potato (purple). That upper figure is a like-for-like comparison rather than a serving — dried and concentrated foods are normally used by the spoonful, so their per-100 g value is the fairer read. The table on this page lists both for every preparation measured.
Where does this sweet potato purine value come from?
Dietary Guideline for Adults with Hyperuricaemia and Gout (2024 Edition) and USDA and ODS-NIH Database for the Purine Content of Foods, Release 2.0 (2025). Values are total purines in milligrams per 100 g of the food as described, and nothing is estimated or averaged across sources.
How does sweet potato compare with other grains and staples?
The median for grains and staples in this database is 19 mg per 100 g, with a range of 1 to 75.9 mg. Sweet potato is below that median.
Source
- Dietary Guideline for Adults with Hyperuricaemia and Gout (2024 Edition) — National Health Commission of China, appendix 1. Issued February 2024.
- USDA and ODS-NIH Database for the Purine Content of Foods, Release 2.0 (2025) — Agricultural Research Service, U.S. Department of Agriculture.
Reference information only. Purine values describe foods, not people: they cannot tell you what is safe for you to eat, and nothing here diagnoses or treats gout. Talk to your doctor or dietitian about your own diet and medication.