{"uid":"cap_WFqhWadvwD4Dq4tgiGu4N","slug":"rifle-2004-acute-kidney-injury-classifier-ee5b64c7","name":"RIFLE 2004 Acute Kidney Injury Classifier","description":"RIFLE 2004 (Bellomo Fig. 1) class from baseline and current creatinine in mg/dL and a caller-assigned urine-output category. Class is the worse of the two limbs; persistent ARF >4 weeks is Loss and >3 months is ESRD. magent does not assay creatinine, measure urine, or estimate baseline with MDRD. Not a medical device, not a diagnosis, not AKIN 2007, and not KDIGO 2012.","url":"https://api.magentlab.com/api/calc/rifle","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":["baseline_creatinine_mg_dl","current_creatinine_mg_dl","urine_output","persistent_arf_gt_4_weeks","esrd_gt_3_months"],"properties":{"urine_output":{"enum":["none","oliguria_gt_6h","oliguria_gt_12h","oliguria_24h_or_anuria_12h"],"type":"string","description":"Caller-assigned RIFLE urine-output category (Bellomo 2004 Fig. 1): none (no oliguria or anuria criterion); oliguria_gt_6h (<0.5 mL/kg/h for 6 hours); oliguria_gt_12h (<0.5 mL/kg/h for 12 hours); oliguria_24h_or_anuria_12h (<0.3 mL/kg/h for 24 hours or anuria for 12 hours). Case-insensitive. magent does not collect weight or measure urine."},"esrd_gt_3_months":{"type":"boolean","description":"End-stage kidney disease for more than 3 months as assigned by the caller (Bellomo 2004 ESRD). true maps to rifle_class esrd irrespective of creatinine, urine, or Loss. true or false."},"current_creatinine_mg_dl":{"type":"number","description":"Current serum creatinine in mg/dL (0.1-20). Classification uses the unrounded value. µmol/L is not accepted on this tool. magent does not assay creatinine."},"baseline_creatinine_mg_dl":{"type":"number","description":"Baseline serum creatinine in mg/dL (0.1-20). Classification uses the unrounded value. µmol/L is not accepted on this tool. magent does not assay creatinine."},"persistent_arf_gt_4_weeks":{"type":"boolean","description":"Persistent complete loss of kidney function for more than 4 weeks as assigned by the caller (Bellomo 2004 Loss). true maps to rifle_class loss unless esrd_gt_3_months is true. true or false."}}}},"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_CqA7vXrMxx5cF_fNoPYu_","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":"Classifies acute kidney injury (AKI) severity using the RIFLE 2004 framework (Bellomo Fig. 1) from baseline creatinine, current creatinine, and caller-assigned urine output category","exampleAgentPrompt":"My patient has a baseline creatinine of 1.0 mg/dL and a current creatinine of 2.2 mg/dL, with oliguria for more than 12 hours but no persistent ARF or ESRD — what is their RIFLE 2004 class?","exampleUseCases":[{"title":"ICU AKI triage classification","prompt":"This ICU patient's baseline creatinine was 0.8 mg/dL and it's now 1.7 mg/dL; they've had oliguria for over 6 hours. No persistent loss or ESRD. What RIFLE class are they in?"},{"title":"Persistent renal failure Loss staging","prompt":"A patient had complete kidney function loss for 5 weeks. Their baseline creatinine was 1.2 mg/dL, current is 3.6 mg/dL, and they have oliguria for 24 hours. Is this classified as RIFLE Loss?"},{"title":"End-stage kidney disease ESRD flagging","prompt":"I have a patient with ESRD for over 4 months. Baseline creatinine 1.5 mg/dL, current 4.0 mg/dL, no oliguria criterion. Confirm their RIFLE class using the 2004 Bellomo criteria."}],"resultDescription":"Returns a RIFLE class label (Risk, Injury, Failure, Loss, or ESRD) representing the worse of the creatinine ratio limb and the urine output limb, along with the individual limb classifications. Loss is returned when persistent ARF exceeds 4 weeks; ESRD when kidney disease has persisted beyond 3 months, overriding all other classifications.","failureModes":["Missing required query parameters returns a validation error","Creatinine values outside the accepted range (0.1–20 mg/dL) are rejected","Invalid urine_output enum value returns an error","µmol/L creatinine values are not accepted and will produce incorrect results if passed without conversion","Contradictory flags (e.g. both persistent_arf_gt_4_weeks and esrd_gt_3_months true) resolve to ESRD per the RIFLE hierarchy"],"whenToPreferThis":"Use this endpoint when you need to apply the original Bellomo 2004 RIFLE classification specifically — not AKIN 2007 or KDIGO 2012. Ideal when you already have creatinine in mg/dL and a clinician-assigned urine output category. Do not use if you need automated urine measurement, creatinine assay, MDRD baseline estimation, or a different AKI staging framework.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-16T00:59:11.543Z","isFirstParty":false}