Which purine base makes up most of this number?

Hypoxanthine — 170 mg of the 211.2 mg per 100 g total. The rest is adenine 21.6, guanine 19.6, xanthine 0.

Is this value for raw or cooked food?

Raw — the source entry is Tuna (Bonito), raw. Cooking changes water content, so compare like with like.

Why is hypoxanthine the largest fraction here?

Hypoxanthine accounts for 170 of the 211.2 mg total — about 80% of the number.

Tuna (Bonito), raw

High purine

Finfish and shellfish

Purine content

211 mgper 100 g

The level label is a plain categorization of the number above — not a statement about whether this food fits your diet. See the full disclaimer.

Composition — per 100 g

Purine, total	211 mg
— Adenine	21.6 mg
— Guanine	19.6 mg
— Hypoxanthine	170 mg
— Xanthine	0 mg
Fructose	No data available
Calories	103 kcal

Missing figures are shown as “No data available”; values are copied from the sources below and are never estimated. Laboratory values differ between studies and samples.

Where these numbers come from

Purine total and fractions: Kaneko, K., et al. (2014). Total purine and purine base content of common foodstuffs for facilitating nutritional therapy for gout and hyperuricemia. Biological and Pharmaceutical Bulletin, 37(5), 709-21..
Fructose and calories: USDA FoodData Central record #175156.

If you want something similar

Within finfish and shellfish, the same table also lists Oysters, canned at 107 mg and Cod, Atlantic, wild, raw at 110.3 mg per 100 g.

From the author

Personal experience of someone living with gout

I skip it during a flare. Outside one I eat it, just not too often.

Personal experience — not medical advice. Read the full disclaimer.

Questions

Which purine base makes up most of this number?: Hypoxanthine — 170 mg of the 211.2 mg per 100 g total. The rest is adenine 21.6, guanine 19.6, xanthine 0.
Is this value for raw or cooked food?: Raw — the source entry is Tuna (Bonito), raw. Cooking changes water content, so compare like with like.
Why is hypoxanthine the largest fraction here?: Hypoxanthine accounts for 170 of the 211.2 mg total — about 80% of the number.

Looking for a different food? Search the full database — every entry there links back to its source, whether or not it has a page like this one. Or browse high purine foods.