Which purine base makes up most of this number?

Hypoxanthine — 205.2 mg of the 289 mg per 100 g total. The rest is guanine 51.1, adenine 31.2, xanthine 1.

Is this value for raw or cooked food?

Raw — the source entry is Chicken breast, boneless, skinless, raw. Cooking changes water content, so compare like with like.

Why is hypoxanthine the largest fraction here?

Hypoxanthine accounts for 205.2 of the 289 mg total — about 71% of the number.

Chicken breast, boneless, skinless, raw

High purine

Poultry (other than organs)

Purine content

289 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	289 mg
— Adenine	31.2 mg
— Guanine	51.1 mg
— Hypoxanthine	205 mg
— Xanthine	1 mg
Fructose	No data available
Calories	112 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: USDA and ODS-NIH Database for the Purine Content of Foods, Release 2.0 (2025) — USDA analytical data (FDC Foundation Foods program).
Fructose and calories: USDA FoodData Central record #2646170.

If you want something similar

Within poultry (other than organs), the same table also lists Chicken wing, raw at 137.5 mg and Chicken thigh, raw at 141.7 mg per 100 g.

From the author

Personal experience of someone living with gout

Between flares I usually pan-fry it; during a flare I leave it out.

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

Questions

Which purine base makes up most of this number?: Hypoxanthine — 205.2 mg of the 289 mg per 100 g total. The rest is guanine 51.1, adenine 31.2, xanthine 1.
Is this value for raw or cooked food?: Raw — the source entry is Chicken breast, boneless, skinless, raw. Cooking changes water content, so compare like with like.
Why is hypoxanthine the largest fraction here?: Hypoxanthine accounts for 205.2 of the 289 mg total — about 71% 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.