Kidney · LIVE

Licurse AKI hydronephrosis risk

Licurse

Sum the Licurse 2010 seven-factor integer points used for that paper's low versus higher-risk hydronephrosis split in AKI (history of hydronephrosis 4; each of the other six factors 1).

LIVE $0.005 USDC GET /api/calc/licurse

Markdown: /docs/licurse.md · Canonical: https://magentlab.com/docs/licurse

Not a medical device. Not a diagnosis, dose, or listing recommendation.

What it computes

Sum the Licurse 2010 seven-factor integer points used for that paper's low versus higher-risk hydronephrosis split in AKI (history of hydronephrosis 4; each of the other six factors 1).

When to use

When an agent already has the seven Licurse 2010 flags, including caller-assigned Black, and needs the published 0–10 total and 2010 validation band (≤2 low, ≥3 higher), not an ultrasound order. magent does not assign race and does not perform ultrasound.

When not to use

• Not a medical device.
• Not an imaging order and not a diagnosis of obstruction. magent does not perform ultrasonography.
• black is caller-assigned as used in Licurse 2010 (nonblack race scores 1); magent does not assign race.
• Two-level 2010 validation split only: score ≤2 low (validation HN 3.1%, HNRI 0.4%); score ≥3 higher (validation HN 15.7%, HNRI 4.7%). Not a three-level medium band.
• obstruction_diagnosis is one caller-assigned flag covering abdominal or pelvic mass, BPH, pelvic surgery, or neurogenic bladder.
• nephrotoxins, chf, and prerenal_aki (pressor use or sepsis) each score 1 when absent. magent does not identify medications or diagnose sepsis.

Formula

Licurse = 4 if history_hydronephrosis + 1 if not black (nonblack race) + 1 if recurrent_uti + 1 if obstruction_diagnosis + 1 if not nephrotoxins + 1 if not chf + 1 if not prerenal_aki; integer points as used for the 2010 validation split; score 0-10; low iff score<=2 (validation HN 3.1%, HNRI 0.4%); higher iff score>=3 (validation HN 15.7%, HNRI 4.7%)

Citation

Title

Renal Ultrasonography in the Evaluation of Acute Kidney Injury: Developing a Risk Stratification Framework

Authors

Licurse A, Kim MC, Dziura J, Forman HP, Formica RN, Makarov DV, Parikh CR, Gross CP

Source

Arch Intern Med. 2010;170(21):1900-1907

DOI

10.1001/archinternmed.2010.419

Worked example

Also searched as

• Licurse score
• Licurse hydronephrosis
• AKI ultrasound risk
• renal ultrasonography AKI
• Licurse 2010
• hydronephrosis risk AKI
• HNRI Licurse
• nonblack hydronephrosis score

Try

Opens the live endpoint. Unpaid browser requests show the paywall; agents should send Accept: application/json.

/api/calc/licurse?history_hydronephrosis=false&black=true&recurrent_uti=false&obstruction_diagnosis=false&nephrotoxins=true&chf=true&prerenal_aki=true

Full URL: https://api.magentlab.com/api/calc/licurse?history_hydronephrosis=false&black=true&recurrent_uti=false&obstruction_diagnosis=false&nephrotoxins=true&chf=true&prerenal_aki=true

Call

Expect HTTP 402 until you retry with PAYMENT-SIGNATURE. Incomplete query params return HTTP 400 before any quote or charge.

curl -i -H "Accept: application/json" "https://api.magentlab.com/api/calc/licurse?history_hydronephrosis=false&black=true&recurrent_uti=false&obstruction_diagnosis=false&nephrotoxins=true&chf=true&prerenal_aki=true"

Parameters

Bulk (POST)

POST the same path with a JSON items array. The first item is the GET unit; each additional item is $0.002. Invalid items return HTTP 400 before settlement.

POST /api/calc/licurse Max 25 unit_amount + extra_item_amount * (n - 1) extra $0.002 PREVIEW

• 1 to 25 items. Each item uses the same keys as the GET query parameters.
• POST of 1 item costs the same as GET. Lists longer than 25: chunk into multiple POSTs. Extra items still execute; do not pad dummy rows.
• The first invalid item fails the whole request (index in the 400 JSON). You are not charged.
• HTTP 200 is {count, path, items}. Each items[i] is the GET 200 body for that row.
• Catalog misses (empty matches, found=false) stay paid 200s inside that slot.
• x402 resource URL is this path plus n and body_sha256. Browsers that prefer text/html get the same paywall as GET; Pay retries POST with the same items.

Example request (fixture)

{
  "items": [
    {
      "black": "true",
      "chf": "true",
      "history_hydronephrosis": "false",
      "nephrotoxins": "true",
      "obstruction_diagnosis": "false",
      "prerenal_aki": "true",
      "recurrent_uti": "false"
    },
    {
      "black": "true",
      "chf": "true",
      "history_hydronephrosis": "false",
      "nephrotoxins": "true",
      "obstruction_diagnosis": "false",
      "prerenal_aki": "true",
      "recurrent_uti": "false"
    }
  ]
}

Open bulk paywall →

Opens a two-item fixture on the API host. Unpaid browsers get the same MetaMask paywall as GET; Pay retries POST with those items.

Example 200 (fixture)

{
  "count": 2,
  "path": "/api/calc/licurse",
  "items": [
    {
      "black": true,
      "components": [
        {
          "factor": "history_hydronephrosis",
          "points": 0,
          "present": false
        },
        {
          "value": true,
          "factor": "nonblack",
          "points": 0,
          "present": false
        },
        {
          "factor": "recurrent_uti",
          "points": 0,
          "present": false
        },
        {
          "factor": "obstruction_diagnosis",
          "points": 0,
          "present": false
        },
        {
          "value": true,
          "factor": "no_nephrotoxins",
          "points": 0,
          "present": false
        },
        {
          "value": true,
          "factor": "no_chf",
          "points": 0,
          "present": false
        },
        {
          "value": true,
          "factor": "no_prerenal_aki",
          "points": 0,
          "present": false
        }
      ],
      "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.",
      "citation": {
        "authors": "Licurse A, Kim MC, Dziura J, Forman HP, Formica RN, Makarov DV, Parikh CR, Gross CP",
        "doi": "10.1001/archinternmed.2010.419",
        "id": "licurse-2010",
        "pmid": "21098343",
        "source": "Arch Intern Med. 2010;170(21):1900-1907",
        "title": "Renal Ultrasonography in the Evaluation of Acute Kidney Injury: Developing a Risk Stratification Framework"
      },
      "formula": "licurse",
      "formula_expression": "Licurse = 4 if history_hydronephrosis + 1 if not black (nonblack race) + 1 if recurrent_uti + 1 if obstruction_diagnosis + 1 if not nephrotoxins + 1 if not chf + 1 if not prerenal_aki; integer points as used for the 2010 validation split; score 0-10; low iff score<=2 (validation HN 3.1%, HNRI 0.4%); higher iff score>=3 (validation HN 15.7%, HNRI 4.7%)",
      "max_score": 10,
      "score": 0,
      "risk_band": "low",
      "chf": true,
      "history_hydronephrosis": false,
      "nephrotoxins": true,
      "obstruction_diagnosis": false,
      "prerenal_aki": true,
      "recurrent_uti": false,
      "validation_hn_percent": 3.1,
      "validation_hnri_percent": 0.4
    },
    {
      "black": true,
      "components": [
        {
          "factor": "history_hydronephrosis",
          "points": 0,
          "present": false
        },
        {
          "value": true,
          "factor": "nonblack",
          "points": 0,
          "present": false
        },
        {
          "factor": "recurrent_uti",
          "points": 0,
          "present": false
        },
        {
          "factor": "obstruction_diagnosis",
          "points": 0,
          "present": false
        },
        {
          "value": true,
          "factor": "no_nephrotoxins",
          "points": 0,
          "present": false
        },
        {
          "value": true,
          "factor": "no_chf",
          "points": 0,
          "present": false
        },
        {
          "value": true,
          "factor": "no_prerenal_aki",
          "points": 0,
          "present": false
        }
      ],
      "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.",
      "citation": {
        "authors": "Licurse A, Kim MC, Dziura J, Forman HP, Formica RN, Makarov DV, Parikh CR, Gross CP",
        "doi": "10.1001/archinternmed.2010.419",
        "id": "licurse-2010",
        "pmid": "21098343",
        "source": "Arch Intern Med. 2010;170(21):1900-1907",
        "title": "Renal Ultrasonography in the Evaluation of Acute Kidney Injury: Developing a Risk Stratification Framework"
      },
      "formula": "licurse",
      "formula_expression": "Licurse = 4 if history_hydronephrosis + 1 if not black (nonblack race) + 1 if recurrent_uti + 1 if obstruction_diagnosis + 1 if not nephrotoxins + 1 if not chf + 1 if not prerenal_aki; integer points as used for the 2010 validation split; score 0-10; low iff score<=2 (validation HN 3.1%, HNRI 0.4%); higher iff score>=3 (validation HN 15.7%, HNRI 4.7%)",
      "max_score": 10,
      "score": 0,
      "risk_band": "low",
      "chf": true,
      "history_hydronephrosis": false,
      "nephrotoxins": true,
      "obstruction_diagnosis": false,
      "prerenal_aki": true,
      "recurrent_uti": false,
      "validation_hn_percent": 3.1,
      "validation_hnri_percent": 0.4
    }
  ]
}

Response

Example JSON

Machine form of the same example. Frozen fixture. Not a live lookup.

{
  "black": true,
  "components": [
    {
      "factor": "history_hydronephrosis",
      "points": 0,
      "present": false
    },
    {
      "value": true,
      "factor": "nonblack",
      "points": 0,
      "present": false
    },
    {
      "factor": "recurrent_uti",
      "points": 0,
      "present": false
    },
    {
      "factor": "obstruction_diagnosis",
      "points": 0,
      "present": false
    },
    {
      "value": true,
      "factor": "no_nephrotoxins",
      "points": 0,
      "present": false
    },
    {
      "value": true,
      "factor": "no_chf",
      "points": 0,
      "present": false
    },
    {
      "value": true,
      "factor": "no_prerenal_aki",
      "points": 0,
      "present": false
    }
  ],
  "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.",
  "citation": {
    "authors": "Licurse A, Kim MC, Dziura J, Forman HP, Formica RN, Makarov DV, Parikh CR, Gross CP",
    "doi": "10.1001/archinternmed.2010.419",
    "id": "licurse-2010",
    "pmid": "21098343",
    "source": "Arch Intern Med. 2010;170(21):1900-1907",
    "title": "Renal Ultrasonography in the Evaluation of Acute Kidney Injury: Developing a Risk Stratification Framework"
  },
  "formula": "licurse",
  "formula_expression": "Licurse = 4 if history_hydronephrosis + 1 if not black (nonblack race) + 1 if recurrent_uti + 1 if obstruction_diagnosis + 1 if not nephrotoxins + 1 if not chf + 1 if not prerenal_aki; integer points as used for the 2010 validation split; score 0-10; low iff score<=2 (validation HN 3.1%, HNRI 0.4%); higher iff score>=3 (validation HN 15.7%, HNRI 4.7%)",
  "max_score": 10,
  "score": 0,
  "risk_band": "low",
  "chf": true,
  "history_hydronephrosis": false,
  "nephrotoxins": true,
  "obstruction_diagnosis": false,
  "prerenal_aki": true,
  "recurrent_uti": false,
  "validation_hn_percent": 3.1,
  "validation_hnri_percent": 0.4
}

Client errors (HTTP 400)

Invalid params return 400 without charge. Shared HTTP 402 and 503 meanings: Payments.

Related tools

• KDIGO AKI — Apply KDIGO 2012 Table 2 AKI staging and return stage 0-3 as the worse of the creatinine and urine-output limbs, with initiated renal replacement therapy or a caller pediatric eGFR <35 flag mapping to stage 3.
• FENa — Compute fractional excretion of sodium from plasma and urine sodium and creatinine using Espinel 1976.
• STONE score — Sum the Moore 2014 STONE score for uncomplicated ureteral stone from five caller-assigned Table 3 items and return the 0-13 total plus low (0-5), moderate (6-9), or high (10-13) probability.

Payment

Unpaid requests return HTTP 402 even if query parameters or POST items are missing or invalid, so CDP and agents can index the path. After a PAYMENT-SIGNATURE, invalid params return HTTP 400 JSON before settlement. magent does not charge. Fix the params, then request a new 402 quote for that complete URL. Catalog misses (empty matches, found=false) are valid paid 200s. Unpaid valid requests return HTTP 402 with a base64 PAYMENT-REQUIRED header. HTTP 503 is not a new quote: retry the same PAYMENT-SIGNATURE. Full handshake and shared payment errors: Payments. Stdio MCP: /docs/mcp.

Guarantees

• HTTP 402 is unpaid, including a missing query. After PAYMENT-SIGNATURE, invalid parameters return HTTP 400 before settlement. You are not charged. HTTP 402 never includes the tool JSON.
• exact: settlement finishes before the tool (paymentFlow upfront). batch-settlement: verify/deposit before the tool; chargedCumulativeAmount commits after HTTP 2xx. Uncertain or failed settlement fails closed (HTTP 503). Retry the same PAYMENT-SIGNATURE.
• HTTP 402 is unpaid only. Do not sign a second authorization because of a 503.
• Execution is timeout-bounded and concurrency-capped.
• Calculator inputs are stored encrypted for allowlisted operators (Magent Console). They are not in public logs, SSH lookups, catalog, or rollups. Request logs store path without query.