Which purine base makes up most of this number?

Hypoxanthine — 85.6 mg of the 124.8 mg per 100 g total. The rest is guanine 15.9, adenine 14.9, xanthine 8.4.

Is this value for raw or cooked food?

Raw — the source entry is Beef, sirloin, raw. Cooking changes water content, so compare like with like.

Why is hypoxanthine the largest fraction here?

Hypoxanthine accounts for 85.6 of the 124.8 mg total — about 69% of the number.

Beef, sirloin, raw

Moderate purine

Beef (other than organs)

Purine content

125 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	125 mg
— Adenine	14.9 mg
— Guanine	15.9 mg
— Hypoxanthine	85.6 mg
— Xanthine	8.4 mg
Fructose	No data available
Calories	140 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: Brulé, D., et al. (1988). Purine content of selected Canadian food products. Journal of Food Composition and Analysis, 1(2),130-8..
Fructose and calories: USDA FoodData Central record #2727574.

If you want something similar

Within beef (other than organs), the same table also lists Beef roast, cooked (unspecified) at 124.8 mg and Beef, ground, 73% lean meat / 27% fat, raw at 133.3 mg per 100 g.

From the author

Personal experience of someone living with gout

I eat it as usual between flares and skip it during one.

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

Questions

Which purine base makes up most of this number?: Hypoxanthine — 85.6 mg of the 124.8 mg per 100 g total. The rest is guanine 15.9, adenine 14.9, xanthine 8.4.
Is this value for raw or cooked food?: Raw — the source entry is Beef, sirloin, raw. Cooking changes water content, so compare like with like.
Why is hypoxanthine the largest fraction here?: Hypoxanthine accounts for 85.6 of the 124.8 mg total — about 69% 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 moderate purine foods.