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magent Rebound Hyperbilirubinemia Score (Chang 2017)
x402
magent Rebound Hyperbilirubinemia Score (Chang 2017) is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Computes the Chang 2017 three-variable rebound hyperbilirubinemia score to estimate likelihood of TSB returning to phototherapy threshold within 72 hours after stopping phototherapy in neonates.
Price / call$0.005
Success—
StatusUnknown
How this service works
Chang 2017 three-variable rebound hyperbilirubinemia score: +15 if GA <38 weeks, −7 × age at phototherapy start in days, −4 × (caller AAP phototherapy threshold − TSB at termination), +50. Scores <20 correspond to a <4% chance of TSB returning to threshold within 72 hours. magent does not assay bilirubin or compute the AAP nomogram. Not Chang 2019. Not a phototherapy order.
Output
Returns the computed Chang 2017 rebound hyperbilirubinemia score (a numeric value). Scores below 20 indicate less than a 4% probability that TSB will return to the phototherapy threshold within 72 hours after stopping phototherapy. The endpoint does not itself assay bilirubin, compute AAP thresholds, or issue phototherapy orders.
Example use cases
Preterm infant phototherapy discharge decision
“I'm considering stopping phototherapy for a 36-week gestational age infant who's 3 days old. TSB at termination is 10.8 mg/dL and the AAP threshold is 14.5 mg/dL — what's the Chang 2017 rebound hyperbilirubinemia score and is the rebound risk below 4%?”
Term infant post-phototherapy rebound risk
“Baby is 38 weeks gestation, phototherapy was started on day 1, TSB when we stopped was 12.0 mg/dL, phototherapy threshold was 17.0 mg/dL. Can you calculate the Chang 2017 rebound score and tell me if there's less than a 4% chance the bilirubin will return to threshold within 72 hours?”
Late preterm infant rebound scoring for NICU handoff
“For handoff notes: 35-week GA neonate, phototherapy initiated at 2.5 days of age, stopped at TSB 13.2 mg/dL, threshold was 15.8 mg/dL. Run the three-variable Chang 2017 rebound hyperbilirubinemia score so we can document the rebound risk.”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/rebound_hyperbilirubinemiaWhen to prefer
Use this endpoint when you need the specific Chang 2017 three-variable rebound hyperbilirubinemia score for neonates ≥35 weeks gestational age being considered for phototherapy discontinuation. Prefer this over generic bilirubin tools when you need a validated, scored risk estimate (with the <20 = <4% rebound risk cutpoint). Do not use if you need the 2019 Chang model, AAP nomogram threshold computation, or actual bilirubin measurement.
Side effects
- Missing required query parameters (gestational_age_weeks, age_at_initiation_days, tsb_at_termination_mg_dl, phototherapy_threshold_mg_dl) result in a 400 error
- Gestational age outside supported range (35-45 weeks) may yield out-of-cohort results
- Age at initiation outside 0-14 days may be outside validated cohort range
- TSB or threshold values outside 0-40 mg/dL range may produce unexpected results
- Payment not provided or insufficient USDC may result in 402 Payment Required response
- Confusing this with Chang 2019 (different model) may yield clinically inappropriate interpretation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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