Last reviewed: 2026-09-03 • Editorial Standards

Hiratake & Japanese Mushroom Varieties: Purine Ranking (Lowest to Highest)

Evidence-based comparison — data from USDA+ODS-NIH PURINE DATABASE Release 2 (March 2025)

Lowest Purine

#1Tsukuritake49.5 mg/100g
#2White hiratake66.7 mg/100g
#3Hiratake142.3 mg/100g

Highest Purine

#4White hiratake66.7 mg/100g
#3Hiratake142.3 mg/100g
#2ear (dried)155.7 mg/100g

Category Average: 103.5 mg/100g/100g

The average across 4 foods with lab-measured data. Foods below this average are better-than-typical choices within this category.

How to Use This Ranking

The purine ranking is sorted from lowest to highest. Rank #1 is the lowest-purine food in the category. Foods in the top half (above median) should be consumed with more awareness of portion and frequency. The difference between adjacent ranks varies: in some categories, rank #5 and #10 might be only 10 mg apart; in others, the gap can be 100+ mg. Always check the actual milligram value, not just the position. Rankings do not account for fructose or alcohol — use individual food pages for a complete risk assessment.

ACR 2020 Guideline Context

The American College of Rheumatology recommends that gout patients focus on purine awareness rather than complete food group elimination. Within any category, there is a wide purine range. The goal is to shift toward lower-purine choices within categories you already eat, rather than eliminating entire food groups. This ranking helps you identify which specific items to prioritize and which to limit.

Japanese guidelines recommend under 400 mg of total dietary purines per day. Using this ranking, you can estimate how much of budget each food uses per typical serving.

How This Comparison Is Built

Every food in this comparison has been evaluated using a three-factor risk engine that independently assesses purine content, fructose level, and alcohol presence. Purine values come from two primary references — the USDA+ODS-NIH PURINE DATABASE Release 2 (March 2025) and Kaneko et al. (Biol Pharm Bull 37(5):709-721, 2014, PMID: 24553148). Fructose data is sourced from USDA SR28 Food Composition Tables. The verdict system follows ACR 2020 guideline thresholds: Safe (purine <50 mg, fructose <2g, no alcohol), Moderate (purine 50-150 mg or fructose 2-5g), Avoid (purine >150 mg, fructose >5g, or alcohol present). Data quality is labeled T1 (lab-measured), T2 (measured + consensus), or T3 (category estimate) on each food's detail page.

This comparison is provided for informational purposes only and does not constitute medical advice. Individual tolerance to purines and fructose varies. Consult a healthcare professional for personalized dietary guidance. Last reviewed: 2026-09-03.

Frequently Asked Questions

Are hiratake mushrooms high in purines?
Hiratake (oyster mushroom) measures 142.3 mg per 100g in our database — Moderate, above the 50-100 mg band most vegetables sit in but below the ~150 mg Avoid threshold. White hiratake measures 66.7 mg and tsukuritake 49.5 mg, so variety matters. A typical mushroom serving is well under 100g, which keeps the real-world purine load modest.
Does drying change mushroom purine content?
Yes — dramatically. Fresh hiratake sits at 142.3 mg while dried wood ear (kikurage) measures 155.7 mg per 100g, and dried shiitake elsewhere in our database measures over 370 mg. Removing water concentrates everything, purines included. Rehydrated mushrooms dilute back toward fresh levels, but weight-for-weight, dried forms always read higher.
Should gout patients avoid all mushrooms?
No — the old blanket warning against mushrooms came from purine estimate tables, not measured data or outcome studies. Our measured values put most fresh mushrooms in the Moderate band, and large cohort studies have not linked mushroom intake to gout flares. Treating mushrooms like any Moderate food — normal portions, varied diet — matches the evidence.