{"slug":"api-magentlab-com-api-calc-psadt-4f5a19","title":"Pound 1999 PSA doubling time from two rising PSA values","host":"api.magentlab.com","method":"POST","resource":"https://api.magentlab.com/api/calc/psadt","category":"other","description":"Pound 1999 PSA doubling time from two rising PSA values: psadt_months = ln(2) x interval_months / ln(psa2_ng_ml / psa1_ng_ml), 1 decimal. PSA each 0.2-10000 ng/mL; psa2 must exceed psa1; interval_months 0.25-120. Reports the Pound split <=10 vs >10 months (exactly 10.0 is <=10). Two-point first-orde","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":243,"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":[{"interval_months":10,"psa1_ng_ml":0.4,"psa2_ng_ml":0.8},{"interval_months":10,"psa1_ng_ml":0.4,"psa2_ng_ml":0.8}]},"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":{"interval_months":{"description":"Months between the two PSA values (0.25-120, magent clamp). Pound 1999 does not publish an input band for this two-point tool.","type":"number"},"psa1_ng_ml":{"description":"Earlier serum PSA in ng/mL (0.2-10000). Pound biochemical recurrence used detectable PSA ≥0.2 ng/mL. magent does not measure PSA.","type":"number"},"psa2_ng_ml":{"description":"Later serum PSA in ng/mL (0.2-10000). Must be greater than psa1_ng_ml (rising). magent does not measure PSA.","type":"number"}},"required":["psa1_ng_ml","psa2_ng_ml","interval_months"],"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":243,"error":null}],"description_full":"Pound 1999 PSA doubling time from two rising PSA values: psadt_months = ln(2) x interval_months / ln(psa2_ng_ml / psa1_ng_ml), 1 decimal. PSA each 0.2-10000 ng/mL; psa2 must exceed psa1; interval_months 0.25-120. Reports the Pound split <=10 vs >10 months (exactly 10.0 is <=10). Two-point first-order kinetics only. magent does not measure PSA. Not a medical device.","last_updated":"2026-09-28T13:55:21.827Z","schemes":["exact"]}