{"slug":"api-magentlab-com-api-calc-kfre-4608a9","title":"Tangri 2011 4-variable Kidney Failure Risk Equation","host":"api.magentlab.com","method":"POST","resource":"https://api.magentlab.com/api/calc/kfre","category":"other","description":"Tangri 2011 4-variable Kidney Failure Risk Equation: 2- and 5-year risk of dialysis or transplant from age, male, eGFR, and urine ACR (mg/g). Risk = 1 - S0^exp(LP) with that paper's 4-variable coefficients. Caller supplies eGFR; magent does not compute CKD-EPI or assay ACR. Not the 8-variable model,","price_listed":0.005,"price_asked":0.007,"state":"overcharges","state_label":"Asked 1.4x its listed price for its own example","checks_7d":1,"answered_7d":1,"latency_ms_median":280,"reported_calls_30d":0,"reported_payers_30d":0,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"items":[{"acr_mg_g":300,"age_years":55,"egfr_ml_min":30,"male":true},{"acr_mg_g":300,"age_years":55,"egfr_ml_min":30,"male":true}]},"method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"additionalProperties":false,"properties":{"items":{"items":{"properties":{"acr_mg_g":{"description":"Urine albumin-to-creatinine ratio in mg/g (0.1-10000, magent clamp; must be positive). Enters as natural log, centered at 5.137. magent does not assay ACR and does not convert from mg/mmol.","type":"number"},"age_years":{"description":"Age in years (18-90, magent clamp). Tangri 2011 4-variable model uses age as a continuous predictor (per 10 years, centered at 7.036). Adult CKD 3-5 derivation.","type":"integer"},"egfr_ml_min":{"description":"Caller-supplied eGFR in mL/min/1.73 m2 (1-150, magent clamp; must be positive). Tangri 2011 derivation was CKD stages 3-5. magent does not compute CKD-EPI eGFR and does not assay creatinine.","type":"number"},"male":{"description":"true if male, false if female. Enters the linear predictor as 1 or 0 (centered at 0.5642). No race coefficient.","type":"boolean"}},"required":["age_years","male","egfr_ml_min","acr_mg_g"],"type":"object"},"maxItems":25,"minItems":1,"type":"array"}},"required":["items"],"type":"object"},"headers":{"additionalProperties":{"type":"string"},"type":"object"},"method":{"const":"POST","type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-28","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.007,"price_match":false,"latency_ms":280,"error":null}],"description_full":"Tangri 2011 4-variable Kidney Failure Risk Equation: 2- and 5-year risk of dialysis or transplant from age, male, eGFR, and urine ACR (mg/g). Risk = 1 - S0^exp(LP) with that paper's 4-variable coefficients. Caller supplies eGFR; magent does not compute CKD-EPI or assay ACR. Not the 8-variable model, not Tangri 2016 country S0, no race. Not a dialysis or transplant order. Not a medical device.","last_updated":"2026-09-28T13:52:25.461Z","schemes":["exact"]}