{"uid":"cap_if5Jl1RcHPphtvtz2wr69","slug":"acr-eular-2015-gout-classification-score-neogi-455dde52","name":"ACR/EULAR 2015 Gout Classification Score (Neogi)","description":"ACR/EULAR 2015 gout classification (Neogi). MSU crystals classify without score ≥8; else score ≥8 (max 23). Pattern 0/1/2, characteristics 0–3, time course 0/1/2, tophus 4, urate −4 to 4, MSU-negative −2, imaging 4+4. Not a diagnosis. Not Janssens 2010. magent does not examine joints or polarizing microscopy.","url":"https://api.magentlab.com/api/calc/acr_eular_gout","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"headers":{"type":"object","additionalProperties":{"type":"string"}},"queryParams":{"type":"object","required":["entry_criterion","sufficient_msu","pattern","characteristics","time_course","tophus","synovial","imaging_urate","imaging_erosion"],"properties":{"tophus":{"type":"boolean","description":"Clinical evidence of tophus: draining or chalk-like subcutaneous nodule under transparent skin, often with overlying vascularity, in typical locations (joints, ears, olecranon bursae, finger pads, tendons e.g. Achilles) (Neogi 2015). true scores 4; false scores 0. magent does not examine joints."},"pattern":{"enum":["other","ankle_midfoot","mtp1"],"type":"string","description":"Pattern of joint/bursa involvement ever, monoarticular or oligoarticular unless other (Neogi 2015). other (joints/bursa other than ankle, midfoot, or 1st MTP, or only as part of a polyarticular presentation) scores 0. ankle_midfoot (ankle or midfoot without 1st MTP) scores 1. mtp1 (1st MTP) scores 2. magent does not examine joints."},"synovial":{"enum":["not_done","msu_negative"],"type":"string","description":"Synovial fluid of a symptomatic (ever) joint/bursa, trained observer (Neogi 2015). not_done scores 0; msu_negative scores −2. MSU-positive is sufficient_msu, not this field. magent does not perform polarizing microscopy."},"time_course":{"enum":["none","one_typical","recurrent"],"type":"string","description":"Time course of episode(s) ever (Neogi 2015). A typical episode has ≥2 of: time to maximum pain <24 h; resolution ≤14 days; complete resolution between episodes. none scores 0; one_typical scores 1; recurrent scores 2. magent does not take a history."},"imaging_urate":{"enum":["absent_or_not_done","present"],"type":"string","description":"Imaging evidence of urate deposition (ultrasound double-contour or DECT urate) in a symptomatic (ever) joint/bursa (Neogi 2015). present scores 4. If imaging is not available, absent_or_not_done scores 0. magent does not read imaging."},"sufficient_msu":{"type":"boolean","description":"Presence of MSU crystals in a symptomatic joint or bursa (synovial fluid) or tophus (Neogi 2015 Step 2). true classifies gout without requiring score ≥8. magent does not perform polarizing microscopy."},"characteristics":{"enum":[0,1,2,3],"type":"integer","description":"Count (0-3) of symptomatic-episode characteristics ever: erythema overlying the affected joint; cannot bear touch or pressure; great difficulty walking or inability to use the affected joint (Neogi 2015). Points equal the count. magent does not examine joints."},"entry_criterion":{"type":"boolean","description":"Must be true. ACR/EULAR 2015 entry: at least one episode of swelling, pain, or tenderness in a peripheral joint or bursa. false is invalid. magent does not examine joints."},"imaging_erosion":{"enum":["absent_or_not_done","present"],"type":"string","description":"Conventional radiograph of hands and/or feet with ≥1 gout-related erosion (cortical break with sclerotic margin and overhanging edge; excludes DIP joints and gull-wing) (Neogi 2015). present scores 4; absent_or_not_done scores 0. magent does not read radiographs."},"uric_acid_mg_dl":{"type":"number","description":"Highest serum urate in mg/dL (uricase method; 1-20). Provide this or uric_acid_umol_l, not both. <4 scores −4; ≥4 and <6 scores 0; 6–<8 scores 2; 8–<10 scores 3; ≥10 scores 4. magent does not assay uric acid."},"uric_acid_umol_l":{"type":"number","description":"Highest serum urate in µmol/L (uricase method; 60-1190). Provide this or uric_acid_mg_dl, not both. mmol/L = µmol/L / 1000. <0.24 scores −4; ≥0.24 and <0.36 scores 0; 0.36–<0.48 scores 2; 0.48–<0.60 scores 3; ≥0.60 scores 4. magent does not assay uric acid."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_P_qXtNou_0sospbKi2tyy","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Calculates the ACR/EULAR 2015 gout classification score using clinical, laboratory, and imaging criteria to classify whether a patient meets the gout case definition.","exampleAgentPrompt":"Classify this patient for gout using the ACR/EULAR 2015 Neogi criteria: entry criterion is met, no MSU crystals confirmed, joint pattern is 1st MTP, characteristics score is 2 (one typical episode), time course is recurrent, no tophus, synovial fluid not done, urate deposition present on imaging, no erosion on imaging.","exampleUseCases":[{"title":"Rheumatology clinic gout classification","prompt":"I have a patient with a swollen 1st MTP joint, two prior typical episodes that resolved within 14 days, no tophus, synovial fluid not done, and urate deposition visible on ultrasound but no erosion — run the ACR/EULAR 2015 gout classification score for me. Entry criterion is met, no MSU crystals confirmed, pattern is mtp1, characteristics score is 2, time course is recurrent."},{"title":"ED patient with ankle arthritis workup","prompt":"Can you calculate the Neogi 2015 gout classification score for an ED patient? Entry criterion met, no MSU crystals, joint pattern is ankle/midfoot only, characteristics score is 1, one typical episode, no tophus, synovial fluid was tested and MSU-negative, no imaging done for urate or erosion."},{"title":"Research study gout case ascertainment","prompt":"I need to classify a study participant for gout using the ACR/EULAR 2015 criteria: entry criterion met, no sufficient MSU crystals, pattern is other joints, characteristics score 0, no typical episodes, no tophus, synovial fluid not done, no imaging urate deposition, no imaging erosion — what score do they get and do they classify as gout?"}],"resultDescription":"Returns the total ACR/EULAR 2015 gout classification score (maximum 23 points) along with a classification determination: patients with confirmed MSU crystals classify regardless of score, while others classify if score ≥8. The response includes the numeric total and likely a per-domain breakdown of points contributed by pattern, characteristics, time course, tophus, synovial fluid, and imaging findings.","failureModes":["Missing required query parameters (entry_criterion, sufficient_msu, pattern, characteristics, time_course, tophus, synovial, imaging_urate, imaging_erosion) returns a 400 error","Invalid enum value for pattern, synovial, time_course, or imaging fields returns a validation error","Boolean field tophus passed as string rather than boolean may cause a parse error","Calling when entry criterion is not met is clinically invalid — the score should only be applied when at least one joint has been inflamed","Payment not included or insufficient USDC results in 402 Payment Required"],"whenToPreferThis":"Use this endpoint when you need a standardized, reproducible ACR/EULAR 2015 gout classification score based on Neogi criteria, particularly when you have structured clinical data (joint pattern, episode time course, imaging results, tophus, synovial fluid) already coded. Prefer this over manual scoring when building clinical decision support tools, research pipelines, or EHR integrations that need consistent gout case ascertainment. Note this is not the Janssens 2010 rule and is not a diagnostic tool — it is specifically the 2015 ACR/EULAR classification standard.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T12:57:57.973Z","isFirstParty":false}