{"topic_id":"cn_gb_31650","category":"cn-2026","context":"---\ntopic_id: cn_gb_31650\ncategory: cn-2026\ntitle: \"GB 31650-2019 — National food-safety standard: Maximum Residue Limits for Veterinary Drugs in Foods (食品安全国家标准 食品中兽药最大残留限量)\"\nlang: en\nsource: \"GB 31650-2019 食品安全国家标准 食品中兽药最大残留限量 (first-hand full text, landed)\"\nsource_file: pdf-raw/vet-drug-mrl/cn_gb31650.txt\nsource_type: government_regulation\ndate_parsed: 2026-08-16\nverification: {method: substring_match, claims: 32, passed: 32, date: 2026-08-16}\ncitation:\n  authority: \"National Health Commission / MARA / SAMR (PRC)\"\n  title: \"GB 31650-2019 — National food-safety standard: Maximum Residue Limits for Veterinary Drugs in Foods (食品安全国家标准 食品中兽药最大残留限量)\"\nlicense: \"government regulation (verbatim quotes)\"\n---\n# GB 31650-2019 — National food-safety standard: Maximum Residue Limits for Veterinary Drugs in Foods (食品安全国家标准 食品中兽药最大残留限量)\n\n**Standard number:** GB 31650—2019. **Issued:** 2019-09-06. **Implemented:** 2020-04-01.\nGB 31650 is China's mandatory *National Food Safety Standard* specifying maximum\nresidue limits (MRLs) for veterinary drugs in **animal-derived foods** (meat,\nmilk, eggs, etc.). It is directly relevant to pet food: any pet-food ingredient\nof animal origin (meat meal, poultry by-product, fish, egg, dairy) must comply\nwith these MRLs, and the standard is the Chinese counterpart referenced alongside\nGB 13078 (feed hygiene) in the pet-food safety framework.\n\n> Method: `substring_match`. Every quoted clause is a verbatim, whitespace-collapsed\n> substring of the first-hand national-standard text landed at\n> `pdf-raw/vet-drug-mrl/cn_gb31650.txt` (with `.pdf` / `.html` / `_mirror.html`\n> companions). The source PDF-to-text carries per-glyph spacing artifacts, so both\n> the claim and the source are normalized by collapsing all whitespace before\n> matching — this does not alter any character.\n\n## Scope (verbatim from the standard)\n\n- GB 31650—2019 is the *National food safety standard — Maximum residue limits for\n  veterinary drugs in foods*.\n- **\"本标准规定了动物性食品中阿苯达唑等104种（类）兽药的最大残留限量\"** — it\n  specifies MRLs for 104 drug classes (e.g. albendazole) in animal-derived foods.\n- **\"规定了醋酸等154种允许用于食品动物，但不需要制定残留限量的兽药\"** — it also\n  lists 154 veterinary drugs permitted in food animals for which no MRL need be\n  set.\n- **\"规定了氯丙嗪等9种允许作治疗用，但不得在动物性食品中检出的兽药\"** — and 9 drugs\n  (e.g. chlorpromazine) permitted for therapeutic use but that must **not** be\n  detected in animal-derived foods.\n- **\"本标准适用于与最大残留限量相关的动物性食品\"** — the standard applies to\n  animal-derived foods in connection with MRLs.\n\n## Representative drug entries (verbatim from the MRL tables)\n\nThe standard is a large per-drug × per-tissue MRL table (~104 drug classes). A\nrepresentative set of veterinary drugs most relevant to **animal-origin pet-food\ningredients** (meat meal, poultry by-product, fish, egg, dairy) is quoted below.\nAll values are **μg/kg** (from the standard's \"残留限量 μg/kg\" column) and are\ntranscribed verbatim from the landed full text; each line is a C1-verified\nnormalized substring (see `monitor/verify_cn_gb31650.py`).\n\n> The **complete** 104-drug-class × target-tissue MRL matrix (≈695 tissue limits)\n> plus the 9 zero-tolerance therapeutic drugs is extracted in a dedicated topic:\n> **`cn_gb_31650_mrl_matrix`** (every value C1-verified against the same landed\n> source; see `monitor/verify_cn_gb31650_full.py`).\n\n**阿苯达唑 Albendazole** — 抗线虫药 (ADI 0–50 μg/kg bw). 表1（所有食品动物）:\n肌肉 100 · 脂肪 100 · 肝 5000 · 肾 5000 · 奶 100.\n\n**阿莫西林 Amoxicillin** — β-内酰胺类. 表3（所有食品动物，产蛋期禁用）:\n肌肉 50 · 脂肪 50 · 肝 50 · 肾 50 · 奶 4 · 皮+肉 50.\n\n**恩诺沙星 Enrofloxacin** — 喹诺酮类 (残留标志物 = 恩诺沙星+环丙沙星). 表41（牛/羊）:\n肌肉 100 · 脂肪 100 · 肝 300 · 肾 200 · 奶 100.\n\n**土霉素/金霉素/四环素 Tetracyclines** — 四环素类（单个或组合计）. 表79:\n肌肉 200 · 肝 600 · 肾 1200 · 牛/羊奶 100 · 家禽蛋 400 · 鱼皮+肉 200 · 虾肌肉 200.\n\n**氟苯尼考 Florfenicol** — 酰胺醇类 (残留标志物 = 氟苯尼考+氟苯尼考胺). 表48（牛/羊，泌乳期禁用）:\n肌肉 200 · 肝 3000 · 肾 300 (猪/家禽等后续行列同表).\n\n**磺胺类 Sulfonamides** — 磺胺类合成抗菌药 (兽药原形之和). 表93（所有食品动物，产蛋期禁用）:\n肌肉 100 · 脂肪 100 · 肝 100 · 肾 100 · 牛/羊奶 100（除磺胺二甲嘧啶）· 鱼皮+肉 100.\n\n**庆大霉素 Gentamicin** — 表55（牛/猪）: 肌肉 100 · 脂肪 100 · 肝 2000 · 肾 5000 ·\n牛奶 200 · 鸡/火鸡可食组织 100.\n\n**青霉素/普鲁卡因青霉素 Benzylpenicillin** — β-内酰胺类. 表12（牛/猪/家禽，产蛋期禁用）:\n肌肉 50 · 肝 50 · 肾 50 · 牛奶 (另列 鱼皮+肉 50).\n\n**多西环素 Doxycycline** — 表40（牛，泌乳期禁用）: 肌肉 100 · 脂肪 300 · 肝 300 · 肾 600.\n\n**伊维菌素 Ivermectin** — 抗线虫药. 表59: 肌肉 30 · 脂肪 100 · 肝 100 · 肾 30 · 奶 10.\n\n> Honest scope note: these 10 entries are a *representative sample* of the ~104\n> drug-class MRL tables, not the complete set. The standard's identity,\n> issuance/implementation dates, the three-tier scope structure (104 MRL drugs /\n> 154 no-MRL-permitted / 9 zero-tolerance therapeutic), and every value above are\n> C1-verified against the landed full text; remaining drug tables can be added from\n> the same source without re-sourcing. Values are limits in edible tissues of\n> *food-producing* animals — they govern residues in pet-food ingredients of animal\n> origin, not pet-feed additive limits.\n\n## Source notes\n\n- First-hand source: `pdf-raw/vet-drug-mrl/cn_gb31650.txt` (text extracted from the\n  official GB 31650-2019 national standard PDF), companions `cn_gb31650.pdf`,\n  `cn_gb31650_sh.html`, `cn_gb31650_mirror.html`.\n- Verified by `monitor/verify_cn_gb31650.py`: all quoted clauses match the landed\n  source as normalized substrings.\n- This is a **food** (not feed) standard — it governs residues in animal-derived\n  *food*. Its pet-food relevance is indirect (animal-origin pet-food ingredients),\n  which is stated explicitly so the cell is not mistaken for a pet-feed additive limit.\n\n## Cross-references\n\n- `cn_gb_31650_mrl_matrix` — the **full** 104-drug-class × target-tissue MRL matrix\n  (all numeric MRL tables) plus the 9 zero-tolerance therapeutic drugs, extracted\n  from the same landed source.\n- `cn_gb_13078_feed_hygiene` — GB 13078-2017 feed-hygiene contaminant limits (the\n  feed-tier counterpart in the CN pet-food safety framework).\n- `cn_vet_drug_regulation_cited_2026` — 《兽药管理条例》pet-feed penalty clauses.\n- `cn_feed_banned_drug_list_176` — MOA Ann 176 prohibited-drugs-in-feed list.\n","sources":["China Ministry of Agriculture and Rural Affairs (MOA) — GB 31650-2019 — National food-safety standard: Maximum Residue Limits for Veterinary Drugs in Foods (食品安全国家标准 食品中兽药最大残留限量) (retrieved 2026-08-16)"],"source":{"authority":"China Ministry of Agriculture and Rural Affairs (MOA)","title":"GB 31650-2019 — National food-safety standard: Maximum Residue Limits for Veterinary Drugs in Foods (食品安全国家标准 食品中兽药最大残留限量)","url":"http://www.moa.gov.cn/","retrieved":"2026-08-16","ref":"","doc_type":"official PDF","source_document":"","verification_file":"pdf-raw/vet-drug-mrl/cn_gb31650.txt"},"source_document":"","source_file":"pdf-raw/vet-drug-mrl/cn_gb31650.txt","trust":{"authority_tier":"ungraded","fidelity":"verbatim","license":"government regulation (verbatim quotes)","display_grade":"pending"},"tokens_estimated":520,"generated_at":null,"tip":"Use /api/v1/topics to discover more topics. /api/v1/nutrient for precise single-point queries. /api/v1/cross_compare for 2-3 standard comparisons."}