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Magent NLR Calculator (Zahorec 2001)
x402
Magent NLR Calculator (Zahorec 2001) 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).
Computes the neutrophil-to-lymphocyte ratio (NLR) from relative neutrophil and lymphocyte percent values using the Zahorec 2001 formula.
Price / call$0.005
Success—
StatusUnknown
How this service works
Neutrophil-to-lymphocyte ratio from relative neutrophil and lymphocyte percents (Zahorec 2001). Deterministic published arithmetic with citation. Not a sepsis diagnosis; magent does not apply later oncology cutoffs that are not in that paper.
Output
Returns the computed NLR value (a dimensionless ratio) derived from dividing relative neutrophil percent by relative lymphocyte percent, following the arithmetic defined in Zahorec 2001. Does not include a sepsis diagnosis, oncology cutoffs, or any clinical interpretation beyond the ratio itself.
Example use cases
ICU inflammation triage
“My ICU patient has a CBC showing 80% neutrophils and 10% lymphocytes — what's their NLR using the Zahorec formula?”
Pre-operative risk screening
“Can you calculate the NLR for a surgical candidate with 65% neutrophils and 25% lymphocytes on their pre-op bloodwork?”
Infectious disease monitoring
“My infectious disease patient's differential came back at 75% neutrophils and 15% lymphocytes — compute their neutrophil-to-lymphocyte ratio for the chart.”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/nlrWhen to prefer
Choose this endpoint when you need a reproducible, citation-anchored NLR calculation per Zahorec 2001 — particularly when auditability or compliance with a specific published formula matters. Prefer this over ad-hoc arithmetic when the calculation needs to be logged, verified, or paired with a citation. Not appropriate when oncology-specific NLR cutoffs from post-2001 literature are required.
Side effects
- lymphocyte_percent of 0 or missing causes division-by-zero or validation error
- values outside the 0.1–99 range are rejected
- missing required query parameters return a 400-level error
- neutrophil_percent or lymphocyte_percent provided as non-numeric strings fail schema validation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"path": "/api/calc/nlr",
"count": 2,
"items": [
{
"nlr": 3.5,
"formula": "nlr",
"citation": {
"id": "zahorec-2001",
"pmid": "11723675",
"title": "Ratio of neutrophil to lymphocyte counts--rapid and simple parameter of systemic inflammation and stress in critically ill",
"source": "Bratisl Lek Listy. 2001;102(1):5-14",
"authors": "Zahorec R"
},
"disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
"formula_expression": "nlr = neutrophil_percent / lymphocyte_percent",
"lymphocyte_percent": 20,
"neutrophil_percent": 70
},
{
"nlr": 3.5,
"formula": "nlr",
"citation": {
"id": "zahorec-2001",
"pmid": "11723675",
"title": "Ratio of neutrophil to lymphocyte counts--rapid and simple parameter of systemic inflammation and stress in critically ill",
"source": "Bratisl Lek Listy. 2001;102(1):5-14",
"authors": "Zahorec R"
},
"disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
"formula_expression": "nlr = neutrophil_percent / lymphocyte_percent",
"lymphocyte_percent": 20,
"neutrophil_percent": 70
}
]
}
}Tags
x402
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