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VIRSTA Score Calculator (Tubiana 2016)
x402
VIRSTA Score Calculator (Tubiana 2016) 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).
Calculates the Tubiana 2016 VIRSTA score (0–30) for infective endocarditis risk stratification in Staphylococcus aureus bacteremia using nine clinical flags plus CRP.
Price / call$0.005
Success—
StatusUnknown
How this service works
Tubiana 2016 VIRSTA from nine caller-assigned SAB flags plus CRP mg/L. Points: emboli 5, meningitis 5, device or previous IE 4 (one item), IVDU 4, native valve 3, persistent bacteremia 3, vertebral osteomyelitis 2, community/non-nosocomial 2, severe sepsis/shock 1, CRP >190 mg/L 1. Max 30. high_risk iff score ≥ 3. Not an endocarditis diagnosis.
Output
Returns the total VIRSTA integer score (0–30) computed from the nine boolean clinical flags and CRP value, a high_risk boolean (true if score ≥ 3), and the individual point contributions of each criterion. Does not diagnose infective endocarditis.
Example use cases
ICU bacteremia endocarditis triage
“My ICU patient has Staph aureus bacteremia with peripheral emboli, persistent positive blood cultures at 48 hours, community-acquired infection, and a CRP of 220 mg/L — no meningitis, no device, no IVDU, no valve disease, no septic shock. What's their VIRSTA score and are they high risk?”
IVDU patient SAB risk stratification
“I have a patient admitted with Staph aureus bacteremia who is an IV drug user, has native valve disease, community-acquired bacteremia, CRP of 150 mg/L, no emboli, no meningitis, no device, no persistent bacteremia, and no septic shock — can you run the VIRSTA score for me?”
Automated SAB workup in EHR agent
“For our SAB protocol agent: patient has intracardiac device, previous IE, meningitis, severe septic shock, vertebral osteomyelitis, and a CRP of 300 mg/L — no emboli, no IVDU, no native valve disease, nosocomial acquisition, persistent bacteremia present. Calculate the VIRSTA score and flag if high risk.”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/virstaWhen to prefer
Use this endpoint when you need a fast, rule-based VIRSTA integer score for Staphylococcus aureus bacteremia risk stratification per the Tubiana 2016 derivation, with all nine clinical flags and CRP already determined by the clinician. Prefer over manual calculation when integrating into an automated SAB care pathway or clinical decision support agent. Not a substitute for echocardiography or infectious disease consultation.
Side effects
- Missing any required boolean query parameter returns a validation error
- CRP value outside 0–500 mg/L range may be rejected or produce unexpected scoring
- Misclassification of caller-assigned flags (e.g. nosocomial vs community) leads to incorrect scores — the API accepts caller values without validation
- Score boundary misunderstanding: high_risk threshold is ≥ 3, not > 3
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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