# SCORTEN (Bastuji-Garin 2000)

SCORTEN

Status: LIVE
Price: $0.005 USDC
`GET /api/calc/scorten`
HTML: https://magentlab.com/docs/scorten
Markdown: https://magentlab.com/docs/scorten.md

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

## What it computes

Sum the seven Bastuji-Garin 2000 SCORTEN risk factors from caller-assigned flags and return the 0–7 score and that paper's predicted in-hospital mortality token.

## When to use

When an agent has already assigned the published Bastuji-Garin 2000 SI cutoffs as flags and needs the SCORTEN total and predicted in-hospital mortality band. magent does not measure labs or BSA, and does not diagnose TEN/SJS or order ICU care or IVIG.

## When not to use

- Not a medical device and not a diagnosis of TEN or SJS.
- magent does not order ICU care or IVIG.
- Each of the seven Bastuji-Garin 2000 risk factors is a caller-assigned flag using that paper's SI cutoffs. magent does not measure age, heart rate, BSA, urea, glucose, or bicarbonate, and does not convert BUN.
- Predicted in-hospital mortality tokens are from Bastuji-Garin 2000 only (3.2%, 12.1%, 35.3%, 58.3%, 90%). Not ABCD-10.

## Formula

```
SCORTEN = age_gt_40 + malignancy + heart_rate_gt_120 + epidermal_detachment_gt_10_percent + urea_gt_10_mmol_l + glucose_gt_14_mmol_l + bicarbonate_lt_20_mmol_l; each 1 if true; Bastuji-Garin 2000; max 7; predicted in-hospital mortality 0-1 3.2%, 2 12.1%, 3 35.3%, 4 58.3%, >=5 90%
```

## Citation

[SCORTEN: a severity-of-illness score for toxic epidermal necrolysis](https://doi.org/10.1046/j.1523-1747.2000.00061.x)
Bastuji-Garin S, Fouchard N, Bertocchi M, Roujeau JC, Revuz J, Wolkenstein P
J Invest Dermatol. 2000;115(2):149-153
DOI: [10.1046/j.1523-1747.2000.00061.x](https://doi.org/10.1046/j.1523-1747.2000.00061.x)

## Worked example

### All seven flags false

Given: `age_gt_40=false, bicarbonate_lt_20_mmol_l=false, epidermal_detachment_gt_10_percent=false, glucose_gt_14_mmol_l=false, heart_rate_gt_120=false, malignancy=false, urea_gt_10_mmol_l=false`

1. All seven caller-assigned flags false → 0
2. Score = 0 (max 7); predicted_mortality = 3.2_percent


## Also searched as

- SCORTEN
- Bastuji-Garin 2000
- toxic epidermal necrolysis score
- TEN severity score
- SJS TEN SCORTEN
- SCORTEN mortality
- severity-of-illness TEN

## Parameters

- `age_gt_40` (boolean, required): Age >40 years (Bastuji-Garin 2000). true or false as assigned by the caller. magent does not compute age.
- `malignancy` (boolean, required): Presence of malignancy (Bastuji-Garin 2000). true or false as assigned by the caller. magent does not diagnose cancer.
- `heart_rate_gt_120` (boolean, required): Heart rate >120 beats/min (Bastuji-Garin 2000). true or false as assigned by the caller. magent does not measure heart rate.
- `epidermal_detachment_gt_10_percent` (boolean, required): Epidermal detachment >10% of body surface area (Bastuji-Garin 2000). true or false as assigned by the caller. magent does not measure BSA.
- `urea_gt_10_mmol_l` (boolean, required): Serum urea >10 mmol/L (Bastuji-Garin 2000; equivalent BUN >28 mg/dL). true or false as assigned by the caller. magent does not assay urea or convert BUN.
- `glucose_gt_14_mmol_l` (boolean, required): Serum glucose >14 mmol/L (Bastuji-Garin 2000). true or false as assigned by the caller. magent does not assay glucose.
- `bicarbonate_lt_20_mmol_l` (boolean, required): Serum bicarbonate <20 mmol/L (Bastuji-Garin 2000). true or false as assigned by the caller. magent does not assay bicarbonate.

## 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.

Method: `POST /api/calc/scorten`
Max items: 25
Price: unit_amount + extra_item_amount * (n - 1) (unit 5000 atomic, extra 2000 atomic)
Status: 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:

```json
{
  "items": [
    {
      "age_gt_40": "false",
      "bicarbonate_lt_20_mmol_l": "false",
      "epidermal_detachment_gt_10_percent": "false",
      "glucose_gt_14_mmol_l": "false",
      "heart_rate_gt_120": "false",
      "malignancy": "false",
      "urea_gt_10_mmol_l": "false"
    },
    {
      "age_gt_40": "false",
      "bicarbonate_lt_20_mmol_l": "false",
      "epidermal_detachment_gt_10_percent": "false",
      "glucose_gt_14_mmol_l": "false",
      "heart_rate_gt_120": "false",
      "malignancy": "false",
      "urea_gt_10_mmol_l": "false"
    }
  ]
}
```

Human paywall (two-item fixture): https://api.magentlab.com/paywall/bulk/scorten

Example 200:

```json
{
  "count": 2,
  "path": "/api/calc/scorten",
  "items": [
    {
      "components": [
        {
          "factor": "age_gt_40",
          "points": 0,
          "present": false
        },
        {
          "factor": "malignancy",
          "points": 0,
          "present": false
        },
        {
          "factor": "heart_rate_gt_120",
          "points": 0,
          "present": false
        },
        {
          "factor": "epidermal_detachment_gt_10_percent",
          "points": 0,
          "present": false
        },
        {
          "factor": "urea_gt_10_mmol_l",
          "points": 0,
          "present": false
        },
        {
          "factor": "glucose_gt_14_mmol_l",
          "points": 0,
          "present": false
        },
        {
          "factor": "bicarbonate_lt_20_mmol_l",
          "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": "Bastuji-Garin S, Fouchard N, Bertocchi M, Roujeau JC, Revuz J, Wolkenstein P",
        "doi": "10.1046/j.1523-1747.2000.00061.x",
        "id": "bastuji-garin-2000",
        "pmid": "10951229",
        "source": "J Invest Dermatol. 2000;115(2):149-153",
        "title": "SCORTEN: a severity-of-illness score for toxic epidermal necrolysis"
      },
      "formula": "scorten",
      "formula_expression": "SCORTEN = age_gt_40 + malignancy + heart_rate_gt_120 + epidermal_detachment_gt_10_percent + urea_gt_10_mmol_l + glucose_gt_14_mmol_l + bicarbonate_lt_20_mmol_l; each 1 if true; Bastuji-Garin 2000; max 7; predicted in-hospital mortality 0-1 3.2%, 2 12.1%, 3 35.3%, 4 58.3%, >=5 90%",
      "max_score": 7,
      "score": 0,
      "predicted_mortality": "3.2_percent"
    },
    {
      "components": [
        {
          "factor": "age_gt_40",
          "points": 0,
          "present": false
        },
        {
          "factor": "malignancy",
          "points": 0,
          "present": false
        },
        {
          "factor": "heart_rate_gt_120",
          "points": 0,
          "present": false
        },
        {
          "factor": "epidermal_detachment_gt_10_percent",
          "points": 0,
          "present": false
        },
        {
          "factor": "urea_gt_10_mmol_l",
          "points": 0,
          "present": false
        },
        {
          "factor": "glucose_gt_14_mmol_l",
          "points": 0,
          "present": false
        },
        {
          "factor": "bicarbonate_lt_20_mmol_l",
          "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": "Bastuji-Garin S, Fouchard N, Bertocchi M, Roujeau JC, Revuz J, Wolkenstein P",
        "doi": "10.1046/j.1523-1747.2000.00061.x",
        "id": "bastuji-garin-2000",
        "pmid": "10951229",
        "source": "J Invest Dermatol. 2000;115(2):149-153",
        "title": "SCORTEN: a severity-of-illness score for toxic epidermal necrolysis"
      },
      "formula": "scorten",
      "formula_expression": "SCORTEN = age_gt_40 + malignancy + heart_rate_gt_120 + epidermal_detachment_gt_10_percent + urea_gt_10_mmol_l + glucose_gt_14_mmol_l + bicarbonate_lt_20_mmol_l; each 1 if true; Bastuji-Garin 2000; max 7; predicted in-hospital mortality 0-1 3.2%, 2 12.1%, 3 35.3%, 4 58.3%, >=5 90%",
      "max_score": 7,
      "score": 0,
      "predicted_mortality": "3.2_percent"
    }
  ]
}
```

## Response fields

- `formula` (string): scorten
- `formula_expression` (string): Exact expression used
- `score` (integer): SCORTEN points 0-7
- `max_score` (integer): Always 7
- `predicted_mortality` (string): Bastuji-Garin 2000 predicted in-hospital mortality token: 3.2_percent (score 0–1), 12.1_percent (2), 35.3_percent (3), 58.3_percent (4), 90_percent (≥5). Not a TEN/SJS diagnosis and not an ICU or IVIG order.
- `components` (array): Per-factor points
- `citation` (object): Bastuji-Garin 2000 J Invest Dermatol citation
- `disclaimer` (string): Not-a-device notice

## Example JSON

Frozen fixture. Not a live lookup.

```json
{
  "components": [
    {
      "factor": "age_gt_40",
      "points": 0,
      "present": false
    },
    {
      "factor": "malignancy",
      "points": 0,
      "present": false
    },
    {
      "factor": "heart_rate_gt_120",
      "points": 0,
      "present": false
    },
    {
      "factor": "epidermal_detachment_gt_10_percent",
      "points": 0,
      "present": false
    },
    {
      "factor": "urea_gt_10_mmol_l",
      "points": 0,
      "present": false
    },
    {
      "factor": "glucose_gt_14_mmol_l",
      "points": 0,
      "present": false
    },
    {
      "factor": "bicarbonate_lt_20_mmol_l",
      "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": "Bastuji-Garin S, Fouchard N, Bertocchi M, Roujeau JC, Revuz J, Wolkenstein P",
    "doi": "10.1046/j.1523-1747.2000.00061.x",
    "id": "bastuji-garin-2000",
    "pmid": "10951229",
    "source": "J Invest Dermatol. 2000;115(2):149-153",
    "title": "SCORTEN: a severity-of-illness score for toxic epidermal necrolysis"
  },
  "formula": "scorten",
  "formula_expression": "SCORTEN = age_gt_40 + malignancy + heart_rate_gt_120 + epidermal_detachment_gt_10_percent + urea_gt_10_mmol_l + glucose_gt_14_mmol_l + bicarbonate_lt_20_mmol_l; each 1 if true; Bastuji-Garin 2000; max 7; predicted in-hospital mortality 0-1 3.2%, 2 12.1%, 3 35.3%, 4 58.3%, >=5 90%",
  "max_score": 7,
  "score": 0,
  "predicted_mortality": "3.2_percent"
}
```

## Errors

- HTTP 400 `invalid_flag`: boolean clinical flags must be true or false Returned before settlement; you are not charged.
- HTTP 400 `invalid_items`: POST body must be a JSON object with only an items array Returned before settlement; you are not charged.
- HTTP 400 `invalid_item_count`: items must be an array of 1 to 25 objects Returned before settlement; you are not charged.
- HTTP 400 `invalid_item`: each items entry must be a JSON object Returned before settlement; you are not charged.

Shared HTTP 402 and 503: https://magentlab.com/docs/payments

## Related tools

- [SOFA](https://magentlab.com/docs/sofa) — Compute the Vincent 1996 SOFA score from PaO2/FiO2, platelets, bilirubin, MAP and adrenergic agents, GCS, and creatinine or urine output.
- [Charlson CCI](https://magentlab.com/docs/charlson) — Sum the nineteen Charlson 1987 original comorbidity weights and return the published 1-year mortality group.

## 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.

- GET the tool with Accept: application/json (do not send Accept: text/html unless you want the human paywall).
- HTTP 402 means you have not paid. Decode the base64 PAYMENT-REQUIRED header. HTTP 503 is not a new quote.
- Sign accepts[0] (exact, EIP-3009) with validBefore = now + maxTimeoutSeconds (600 seconds), or accepts[1] (batch-settlement deposit/voucher) on product GET. Ping and POST {items} stay exact. Magent retries transient facilitator 429/5xx before answering.
- Retry the same URL with PAYMENT-SIGNATURE (base64 JSON of accepted and payload). Magent attaches canonical extensions.bazaar on CDP verify/settle; echoing 402 bazaar is optional.
- Success is HTTP 200 JSON plus PAYMENT-RESPONSE. exact settles before the tool. batch-settlement verifies (and deposit-settles) before the tool and commits the charge after HTTP 2xx. HTTP 503: retry the same PAYMENT-SIGNATURE. Mint a new exact nonce only after a new HTTP 402.

- offered `exact` on eip155:8453: Fixed-price USDC on Base. The buyer authorizes the advertised amount (EIP-3009). magent settles before the tool runs (paymentFlow upfront). extra.assetTransferMethod=eip3009 extra.paymentFlow=upfront.
- offered `batch-settlement` on eip155:8453: Payment-channel vouchers claimed later in batches. Exact stays accepts[0]. Same-path POST {items} is still exact. extra.assetTransferMethod=eip3009 extra.paymentFlow=authorization.

- not offered `upto`: Not offered. Usage-based: buyer authorizes a ceiling, seller settles the actual amount after work. Reserved for a future metered tool. Not for current calculators or code search.

Same-path POST {items} is still scheme exact: one EIP-3009 authorization for GET unit plus $0.002 per extra item. That is not x402 batch-settlement (payment channels / vouchers).

Shared HTTP 402 and 503 table: https://magentlab.com/docs/payments

Stdio MCP (one process per host): https://magentlab.com/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.
