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Magent Neonatal Partial Exchange Transfusion Volume Calculator (Kumar 2004)
x402
Magent Neonatal Partial Exchange Transfusion Volume Calculator (Kumar 2004) is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Calculates the volume of blood to remove and replace in a neonatal partial exchange transfusion using the Kumar 2004 formula, targeting 55% hematocrit.
Price / call$0.005
Success—
StatusUnknown
How this service works
Partial-exchange volume from Kumar 2004: volume_ml = (actual_hct_percent - 55) / actual_hct_percent * blood_volume_ml. Desired hematocrit is the trial's 55 percent only. Caller assigns blood volume; magent does not choose millilitres per kilogram or saline versus plasma. Not a transfusion order or indication (the trial found no long-term benefit in asymptomatic LBW). Deterministic published arithmetic with citation.
Output
Returns the calculated partial exchange transfusion volume in millilitres, computed as (actual_hct_percent - 55) / actual_hct_percent * blood_volume_ml, based on the deterministic Kumar 2004 arithmetic targeting a 55% desired hematocrit.
Example use cases
Polycythemia workup volume estimate
“I have a term neonate with a hematocrit of 68% and an assigned blood volume of 300 mL — what volume should be exchanged according to the Kumar 2004 partial exchange formula targeting 55% hematocrit?”
Low birth weight infant exchange calculation
“For a low birth weight infant with an actual hematocrit of 75% and a blood volume of 180 mL, calculate how many millilitres need to be exchanged using the Kumar 2004 partial exchange approach.”
Bedside decision support for NICU team
“Our NICU patient has a hematocrit of 62% and the team has assigned a blood volume of 240 mL — use the Kumar 2004 formula to tell us the partial exchange volume we should plan for.”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/neonatal_partial_exchangeWhen to prefer
Use this endpoint when you need a fast, deterministic, citation-backed calculation of neonatal partial exchange transfusion volume per the Kumar 2004 formula. Prefer it when the caller has already determined the blood volume and actual hematocrit and simply needs the arithmetic applied correctly. Not suitable for generating clinical orders, choosing saline versus plasma, or deciding whether transfusion is indicated.
Side effects
- actual_hct_percent at or below 55 is rejected (must be above the 55% target)
- blood_volume_ml outside 40–600 mL range returns a validation error
- missing required query parameters (actual_hct_percent or blood_volume_ml) returns an error
- non-numeric input values are rejected
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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