{"uid":"cap_pUg23UA3DqR31Zefa2Jif","slug":"gold-copd-spirometric-grade-calculator-2017-a361f0eb","name":"GOLD COPD Spirometric Grade Calculator (2017)","description":"GOLD 2017 spirometric grade (Vogelmeier executive summary). Post-bronchodilator FEV1/FVC < 0.70 defines obstruction; then GOLD 1 if FEV1 % predicted >= 80, GOLD 2 if 50 to <80, GOLD 3 if 30 to <50, GOLD 4 if <30. Ratio >= 0.70 returns not_obstructed even when FEV1 is low. Not GOLD ABE (no mMRC, CAT, or exacerbations). magent does not perform spirometry. Not a medical device or a diagnosis.","url":"https://api.magentlab.com/api/calc/gold_copd","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":["fev1_percent_predicted","fev1_fvc_ratio"],"properties":{"fev1_fvc_ratio":{"type":"number","description":"Post-bronchodilator FEV1/FVC as a fraction (0.20-1.00). Values < 0.70 are obstructed; 0.70 and above are not_obstructed with no GOLD 1-4. magent does not perform spirometry."},"fev1_percent_predicted":{"type":"number","description":"Post-bronchodilator FEV1 as percent of predicted (10-150). Used for GOLD 1-4 only when FEV1/FVC is < 0.70. magent does not perform spirometry."}}}},"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_FG0TITPvAjeIzl18yAJWF","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 GOLD 2017 spirometric grade (1–4 or not_obstructed) for COPD from post-bronchodilator FEV1/FVC ratio and FEV1 % predicted.","exampleAgentPrompt":"What GOLD spirometric grade is a COPD patient with a post-bronchodilator FEV1/FVC ratio of 0.62 and FEV1 at 55% predicted?","exampleUseCases":[{"title":"Staging COPD severity in an EHR workflow","prompt":"I have a patient with post-bronchodilator FEV1/FVC of 0.58 and FEV1 % predicted of 42 — what GOLD spirometric grade does that give them?"},{"title":"Ruling out obstruction from borderline spirometry","prompt":"A patient's post-bronchodilator FEV1/FVC came back at 0.72 and FEV1 is 65% predicted — does GOLD 2017 classify them as obstructed?"},{"title":"Automating GOLD grading in a population health report","prompt":"For a cohort analysis, calculate the GOLD grade for a subject with FEV1/FVC ratio 0.48 and FEV1 % predicted of 28."}],"resultDescription":"Returns the GOLD 2017 spirometric grade: 'not_obstructed' when FEV1/FVC ≥ 0.70, or GOLD 1 through 4 when FEV1/FVC < 0.70 (GOLD 1: FEV1 ≥ 80%, GOLD 2: 50–79%, GOLD 3: 30–49%, GOLD 4: < 30%). Does not incorporate mMRC, CAT scores, or exacerbation history (not the GOLD ABE framework).","failureModes":["FEV1/FVC outside allowed range (0.20–1.00) returns validation error","FEV1 % predicted outside allowed range (10–150) returns validation error","Missing required query parameters returns error","Payment failure (x402) prevents response"],"whenToPreferThis":"Use this endpoint when you need a fast, deterministic GOLD 2017 spirometric grade (obstruction severity, GOLD 1–4) from post-bronchodilator spirometry values and do not need the full ABE (exacerbation/symptom) assessment. Prefer this over general-purpose LLM reasoning for reproducibility and auditability in clinical documentation or population health pipelines.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T13:05:56.677Z","isFirstParty":false}