{"slug":"api-magentlab-com-api-calc-das28-crp-7075e8","title":"Wells 2009 DAS28(CRP)","host":"api.magentlab.com","method":"POST","resource":"https://api.magentlab.com/api/calc/das28_crp","category":"other","description":"Wells 2009 DAS28(CRP): 0.56*sqrt(TJC28)+0.28*sqrt(SJC28)+0.014*GH+0.36*ln(CRP+1)+0.96. CRP is mg/L, not SDAI mg/dL. GH is 0-100 mm VAS, not 0-10. The +0.96 constant is required. Remission is DAS28<2.6 as stated in that paper. magent does not count joints or assay CRP. Not DAS28-ESR, SDAI, or CDAI. N","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":[{"crp_mg_l":1,"gh":0,"sjc28":0,"tjc28":0},{"crp_mg_l":1,"gh":0,"sjc28":0,"tjc28":0}]},"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":{"crp_mg_l":{"description":"Caller-assigned C-reactive protein in mg/L (Wells 2009; not mg/dL SDAI). Number 0-500 is a magent clamp. magent does not assay CRP.","type":"number"},"gh":{"description":"Caller-assigned general health (patient assessment) on a 0-100 mm VAS (Wells 2009; 0=best, 100=worst). Number 0-100. Not 0-10 cm SDAI PGA. magent does not examine the patient.","type":"number"},"sjc28":{"description":"Caller-assigned swollen joint count on the 28-joint set (Wells 2009 DAS28-CRP). Integer 0-28. magent does not count joints.","type":"integer"},"tjc28":{"description":"Caller-assigned tender joint count on the 28-joint set (Wells 2009 DAS28-CRP). Integer 0-28. magent does not count joints.","type":"integer"}},"required":["tjc28","sjc28","crp_mg_l","gh"],"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":"Wells 2009 DAS28(CRP): 0.56*sqrt(TJC28)+0.28*sqrt(SJC28)+0.014*GH+0.36*ln(CRP+1)+0.96. CRP is mg/L, not SDAI mg/dL. GH is 0-100 mm VAS, not 0-10. The +0.96 constant is required. Remission is DAS28<2.6 as stated in that paper. magent does not count joints or assay CRP. Not DAS28-ESR, SDAI, or CDAI. Not a rheumatoid arthritis diagnosis.","last_updated":"2026-09-28T14:50:01.849Z","schemes":["exact"]}