{"uid":"cap_8AncOr5VhBFYhLfdqJRsA","slug":"dagan-1985-rochester-criteria-calculator-febrile-infant-56165f14","name":"Dagan 1985 Rochester Criteria Calculator (Febrile Infant)","description":"Dagan 1985 Rochester criteria. Low-risk only if the infant is younger than 3 months (age_days 0-89) and every caller-assigned finding holds: previously healthy term infant, well appearing, no ear/soft-tissue/skeletal infection, WBC 5000-15000/mm3 inclusive, absolute band count <1500/mm3, UA <=10 WBC/hpf, and stool <=5 WBC/hpf if diarrhea. Returns low_risk. magent does not examine the infant. Not Boston, Philadelphia, or PECARN febrile infant 2021. Not a medical device and not a discharge order.","url":"https://api.magentlab.com/api/calc/rochester","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":["age_days","previously_healthy","well_appearing","no_focal_infection","abc_ul","ua_wbc_le_10","diarrhea"],"properties":{"abc_ul":{"type":"number","description":"Absolute band count in cells/µL (same as bands/mm^3). Range 0-100000. Dagan 1985 low-risk requires less than 1500 (1499 meets; 1500 does not)."},"wbc_ul":{"type":"number","description":"Peripheral WBC in cells/µL (same as cells/mm^3). Provide wbc_k_ul or wbc_ul. Range 10-500000. Low-risk requires 5000-15000 inclusive (5000 and 15000 meet; 4999 and 15001 do not)."},"age_days":{"type":"integer","description":"Chronological age in days (integer 0-90). Dagan 1985 studied infants younger than 3 months; low-risk requires age_days < 90 (0-89). 90 is accepted but is not low-risk."},"diarrhea":{"type":"boolean","description":"Diarrhea is present. true or false as assigned by the caller. When true, stool_wbc_le_5 is required. When false, the stool criterion holds without a stool smear."},"wbc_k_ul":{"type":"number","description":"Peripheral WBC in 10^3/µL (same as 10^9/L or 10^3/mm^3). Provide wbc_k_ul or wbc_ul. Range 0.01-500. Low-risk requires 5.0-15.0 inclusive (5000-15000/mm^3; 5.0 and 15.0 meet; 4.99 and 15.01 do not)."},"ua_wbc_le_10":{"type":"boolean","description":"Urinalysis ≤10 WBC/hpf (normal urine findings as used with Dagan 1985 Rochester). true or false as assigned by the caller. magent does not read the sediment."},"stool_wbc_le_5":{"type":"boolean","description":"Stool ≤5 WBC/hpf. Required when diarrhea is true. true or false as assigned by the caller. Ignored when diarrhea is false. magent does not read the smear."},"well_appearing":{"type":"boolean","description":"Well appearing / not ill appearing as assigned by the caller. true or false. magent does not examine the infant."},"no_focal_infection":{"type":"boolean","description":"No physical findings consistent with ear, soft tissue, or skeletal infection (Dagan 1985). true means none of those foci are present. true or false as assigned by the caller. magent does not examine the infant."},"previously_healthy":{"type":"boolean","description":"Previously healthy as in Dagan 1985: born at term, no perinatal complications, no previous or underlying disease, and no previous antibiotic therapy. true or false as assigned by the caller. magent does not take a birth history."}}}},"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_jomWzQUlZNfUMsjxM7Dbo","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":"Applies the Dagan 1985 Rochester criteria to determine whether a febrile infant under 3 months is low-risk for serious bacterial infection","exampleAgentPrompt":"Apply the Dagan 1985 Rochester criteria for this 45-day-old infant: previously healthy term infant, well appearing, no focal infection, WBC 8500/mm³, absolute band count 800/mm³, urinalysis ≤10 WBC/hpf, no diarrhea — is this infant low risk?","exampleUseCases":[{"title":"Febrile neonate triage in ED","prompt":"I have a 55-day-old febrile infant: previously healthy, well appearing, no ear or soft tissue infection, WBC 12000/mm³, bands 900/mm³, UA shows ≤10 WBC/hpf, and no diarrhea. Does this infant meet Dagan 1985 Rochester low-risk criteria?"},{"title":"Infant with diarrhea and fever","prompt":"Can you run the Rochester criteria for a 70-day-old febrile infant who is previously healthy, well appearing, no focal infection, WBC 9000/mm³, band count 1100/mm³, urinalysis ≤10 WBC/hpf, has diarrhea, and stool smear shows ≤5 WBC/hpf?"},{"title":"Borderline WBC Rochester assessment","prompt":"Check Dagan 1985 Rochester low-risk for a 30-day-old: previously healthy term infant, well appearing, no focal infection, WBC 15000/mm³, absolute bands 1400/mm³, UA ≤10 WBC/hpf, no diarrhea — does the WBC of exactly 15000 still meet low-risk?"}],"resultDescription":"Returns a low_risk boolean or classification indicating whether the infant meets all Dagan 1985 Rochester low-risk criteria. If any single criterion fails (age ≥90 days, not previously healthy, ill appearing, focal infection present, WBC outside 5000-15000, bands ≥1500, UA >10 WBC/hpf, or stool >5 WBC/hpf when diarrhea present), the infant is not classified as low risk.","failureModes":["Missing required parameters (age_days, previously_healthy, well_appearing, no_focal_infection, abc_ul, ua_wbc_le_10, diarrhea) returns validation error","When diarrhea is true but stool_wbc_le_5 is not provided, returns error","WBC provided outside accepted range (10-500000 cells/µL) may return error","Age of 90 days is accepted but will not return low-risk","Band count at boundary value of 1500 does not meet low-risk threshold"],"whenToPreferThis":"Use this endpoint when you need to apply specifically the Dagan 1985 Rochester criteria for febrile infant risk stratification. Choose this over Boston, Philadelphia, or PECARN 2021 febrile infant criteria when the clinical workflow explicitly calls for the Rochester approach. This is a pure computation endpoint — all clinical findings (well appearing, focal infection, urinalysis, stool smear) must be pre-assessed and caller-assigned; the endpoint only applies the rule logic.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:33:49.393Z","isFirstParty":false}