After learning that purine is the “raw material” of uric acid, the first question asked by almost all of the patients with gout, whether in outpatient or emergency department, is which food has less purine?
Classification of foods by contents of purine
Generally, the purine obtained from normal diet per day is about 800 mg. In order to prevent hyperuricemia, the low purine diet is recommended, emphasizing control on purine intake form food, i.e. the daily intake of purine shall be no more than 400 mg. During the acute episode of gout, the requirement is stricter, i.e. the daily intake of purine shall be less than 150 mg. In order to facilitate the calculation and enrich the selection for patients, the advocator divided the common foods into the categories of low, medium and high purine according to the contents of purine in foods. The foods will be deemed as high purine food if the content of purine in the food of 100 g is more than 150 mg.
The first category: Low purine food that is suitable to the patients with gout (the content of purine in the food of 100 g <25 mg)
The second category: Medium purine food that shall be taken within limits (the content of purine in the food of 100 g is in the range of 25-150 mg)
The third category: High purine food that shall not be taken (the content of purine in the food of 100 g is in the range of 150-1000 mg)