{"slug":"api-magentlab-com-api-calc-pregnancy-due-dates-c35618","title":"Pregnancy estimated due date from a certain LMP using ACOG Committee Opinion 700","host":"api.magentlab.com","method":"POST","resource":"https://api.magentlab.com/api/calc/pregnancy_due_dates","category":"other","description":"Pregnancy estimated due date from a certain LMP using ACOG Committee Opinion 700 Naegele: edd_days_from_lmp = 280 + (cycle_length_days - 28). Inputs are numeric days_since_lmp (0-294) and cycle_length_days (21-35); those bands are magent clamps. Reports gestational_age_days and days_until_edd (negat","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":[{"cycle_length_days":28,"days_since_lmp":0},{"cycle_length_days":28,"days_since_lmp":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":{"cycle_length_days":{"description":"Usual cycle length in days (integer 21-35 inclusive). magent clamp; ACOG 700 adjusts the 280-day interval by (cycle_length_days - 28) and does not publish this input band. 28 is the Naegele reference cycle.","type":"integer"},"days_since_lmp":{"description":"Completed days since the first day of a certain last menstrual period (integer 0-294 inclusive). magent clamp; ACOG 700 publishes the 280-day Naegele interval, not this input band. Numeric days only. Not a calendar date.","type":"integer"}},"required":["days_since_lmp","cycle_length_days"],"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":"Pregnancy estimated due date from a certain LMP using ACOG Committee Opinion 700 Naegele: edd_days_from_lmp = 280 + (cycle_length_days - 28). Inputs are numeric days_since_lmp (0-294) and cycle_length_days (21-35); those bands are magent clamps. Reports gestational_age_days and days_until_edd (negative if past EDD). Not a dating ultrasound. magent does not interpret imaging. Not a delivery date order.","last_updated":"2026-09-28T15:19:46.295Z","schemes":["exact"]}