{"slug":"api-magentlab-com-api-calc-cdai-aa6569","title":"Best 1976 Crohn's disease activity index (CDAI)","host":"api.magentlab.com","method":"POST","resource":"https://api.magentlab.com/api/calc/cdai","category":"other","description":"Best 1976 Crohn's disease activity index (CDAI): eight weighted variables (7-day liquid stools *2, abdominal-pain sum *5, well-being sum *7, extra-intestinal count *20, antidiarrheal *30, abdominal mass 0/2/5 *10, hematocrit deficit *6, caller-assigned weight-percent deviation). magent returns the r","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":289,"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":[{"abdominal_mass":0,"abdominal_pain_sum_7d":0,"extra_intestinal_count":0,"hematocrit_percent":47,"liquid_stool_count_7d":0,"sex":"male","taking_antidiarrheal":false,"weight_percent_deviation":0,"wellbeing_sum_7d":0},{"abdominal_mass":0,"abdominal_pain_sum_7d":0,"extra_intestinal_count":0,"hematocrit_percent":47,"liquid_stool_count_7d":0,"sex":"male","taking_antidiarrheal":false,"weight_percent_deviation":0,"wellbeing_sum_7d":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":{"abdominal_mass":{"description":"Caller-assigned Best 1976 abdominal mass (exactly 0 none, 2 questionable, or 5 definite; ×10). Not 1, 3, or 4. magent does not examine the patient.","type":"integer"},"abdominal_pain_sum_7d":{"description":"Sum of daily Best 1976 abdominal-pain ratings over 7 days (integer 0-21; each day 0 none, 1 mild, 2 moderate, 3 severe; ×5). magent does not examine the patient.","type":"integer"},"extra_intestinal_count":{"description":"Caller-assigned count 0-6 of Best 1976 extra-intestinal findings (one each: arthritis/arthralgia; iritis/uveitis; erythema nodosum/pyoderma gangrenosum/aphthous ulcer; anal fissure/fistula/abscess; other fistula; fever >37.8 C in the past week; ×20). magent takes the integer count and does not enumerate those names as separate params.","type":"integer"},"hematocrit_percent":{"description":"Hematocrit in percent (10-70). Best 1976 uses a whole-number hematocrit. Deficit is 47 minus this value (male) or 42 minus this value (female), then ×6; may be negative if above the sex standard. magent does not assay hematocrit.","type":"number"},"liquid_stool_count_7d":{"description":"Sum of liquid or very soft stools over 7 days (Best 1976; ×2). Integer 0-70 is a magent clamp, not a published maximum. magent does not count stools.","type":"integer"},"sex":{"description":"male or female. Best 1976 hematocrit standard is 47 (male) or 42 (female). magent does not examine the patient.","type":"string"},"taking_antidiarrheal":{"description":"Taking diphenoxylate/atropine (Lomotil) or opiates for diarrhea as in Best 1976. true or false. true scores 30. magent does not examine the patient.","type":"boolean"},"weight_percent_deviation":{"description":"Caller-assigned Best 1976 weight term 100*(1 - current/standard). May be negative if current is above standard. Magent clamp -50 to 80, not a published range. magent does not look up a standard weight.","type":"number"},"wellbeing_sum_7d":{"description":"Sum of daily Best 1976 general well-being ratings over 7 days (integer 0-28; each day 0 generally well, 1 slightly below par, 2 poor, 3 very poor, 4 terrible; ×7). magent does not examine the patient.","type":"integer"}},"required":["sex","liquid_stool_count_7d","abdominal_pain_sum_7d","wellbeing_sum_7d","extra_intestinal_count","taking_antidiarrheal","abdominal_mass","hematocrit_percent","weight_percent_deviation"],"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":289,"error":null}],"description_full":"Best 1976 Crohn's disease activity index (CDAI): eight weighted variables (7-day liquid stools *2, abdominal-pain sum *5, well-being sum *7, extra-intestinal count *20, antidiarrheal *30, abdominal mass 0/2/5 *10, hematocrit deficit *6, caller-assigned weight-percent deviation). magent returns the rounded integer index only and does not apply later trial activity bands. magent does not examine the patient. Not a Crohn's diagnosis and not the Harvey-Bradshaw one-day index.","last_updated":"2026-09-28T14:09:18.188Z","schemes":["exact"]}