TASH score (Trauma Associated Severe Hemorrhage)

TASH score

Sum the seven Yücel 2006 TASH (Trauma Associated Severe Hemorrhage) nested less-than point bands and return the published 0–28 total as a surrogate for mass transfusion after multiple trauma.

LIVE $0.005 USDC GET /api/calc/tash

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

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

What it computes

Sum the seven Yücel 2006 TASH (Trauma Associated Severe Hemorrhage) nested less-than point bands and return the published 0–28 total as a surrogate for mass transfusion after multiple trauma.

When to use

When an agent needs the published Yücel 2006 TASH point total and must not invent a logistic mass-transfusion probability, an MTP activation, or a transfusion order.

When not to use

Not a medical device and not a transfusion order. magent does not decide whether to transfuse or activate a massive-transfusion protocol (MTP).
This is Yücel 2006 TASH only. It is not the ABC (assessment of blood consumption) score. Do not interchange them.
Intra-abdominal fluid (FAST) and fracture AIS are caller-assigned. magent does not read imaging or assign AIS.
Mass transfusion in the derivation cohort was ≥10 units PRBC from ER to ICU. This tool returns the published point total only, not a logistic probability.

Formula

TASH = SBP (<100:4, <120:1) + Hb g/dL (<7:8, <9:6, <10:4, <11:3, <12:2) + intra-abdominal fluid 3 + fracture AIS (3-4:3, 5:6) + HR>120:2 + BE mmol/L (<-10:4, <-6:3, <-2:1) + male 1; nested less-than highest band only; max 28

Citation

Title: Trauma Associated Severe Hemorrhage (TASH)-Score: probability of mass transfusion as surrogate for life threatening hemorrhage after multiple trauma
Authors: Yücel N, Lefering R, Maegele M, et al.
Source: J Trauma. 2006;60(6):1228-1236
DOI: 10.1097/01.ta.0000220386.84012.bf

Worked example

Published worked example (score 9)

Given: base_excess_mmol_l=-4fracture_ais=3heart_rate_bpm=110hemoglobin_g_dl=10.5intra_abdominal_fluid=falsesex=malesystolic_mm_hg=110

SBP 110 → 1; Hb 10.5 g/dL → 3; FAST false → 0; AIS 3 → 3; HR 110 → 0; BE −4 → 1; male → 1
Score = 9 (max 28)

No scoring bands

Given: base_excess_mmol_l=0fracture_ais=0heart_rate_bpm=80hemoglobin_g_dl=12intra_abdominal_fluid=falsesex=femalesystolic_mm_hg=120

SBP ≥120 → 0; Hb ≥12 → 0; FAST false → 0; AIS 0 → 0; HR ≤120 → 0; BE ≥ −2 → 0; female → 0
Score = 0 (max 28)

Also searched as

TASH score
Trauma Associated Severe Hemorrhage
TASH-Score
Yücel TASH
TASH massive transfusion
TASH hemorrhage score
trauma TASH

Try

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

/api/calc/tash?systolic_mm_hg=110&hemoglobin_g_dl=10.5&intra_abdominal_fluid=false&fracture_ais=3&heart_rate_bpm=110&base_excess_mmol_l=-4&sex=male

Full URL: https://api.magentlab.com/api/calc/tash?systolic_mm_hg=110&hemoglobin_g_dl=10.5&intra_abdominal_fluid=false&fracture_ais=3&heart_rate_bpm=110&base_excess_mmol_l=-4&sex=male

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/tash?systolic_mm_hg=110&hemoglobin_g_dl=10.5&intra_abdominal_fluid=false&fracture_ais=3&heart_rate_bpm=110&base_excess_mmol_l=-4&sex=male"

Parameters

Name	Type	Required	Description
`systolic_mm_hg`	integer	required	Arrival systolic blood pressure in mm Hg (integer 0-300). Nested less-than: <100 scores 4; <120 (and not <100) scores 1; ≥120 scores 0. Highest matching band only.
`hemoglobin_g_dl`	number	optional	Hemoglobin in g/dL (3-22). Provide this or hemoglobin_g_l, not both. Nested less-than: <7 scores 8; <9 scores 6; <10 scores 4; <11 scores 3; <12 scores 2; ≥12 scores 0. Highest matching band only.
`hemoglobin_g_l`	number	optional	Hemoglobin in g/L (30-220). Converted as hemoglobin_g_dl = hemoglobin_g_l / 10. Provide this or hemoglobin_g_dl, not both.
`intra_abdominal_fluid`	boolean	required	Intra-abdominal fluid (FAST) as assigned by the caller (Yücel 2006). true or false. true scores 3. magent does not interpret FAST images.
`fracture_ais`	integer	required	Caller-assigned AIS for complex long bone and/or pelvic fractures. Must be 0 (none), 3, 4, or 5. 3 or 4 scores 3; 5 scores 6. magent does not assign AIS from imaging.
`heart_rate_bpm`	integer	required	Arrival heart rate in beats per minute (integer 30-220). >120 scores 2; 120 does not.
`base_excess_mmol_l`	number	required	Admission base excess in mmol/L (−30 to 20). Nested less-than: < −10 scores 4; < −6 scores 3; < −2 scores 1; ≥ −2 scores 0. Highest matching band only.
`sex`	string	required	Sex as assigned by the caller. male scores 1; female scores 0.

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/tash 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": [
    {
      "base_excess_mmol_l": "-4",
      "fracture_ais": "3",
      "heart_rate_bpm": "110",
      "hemoglobin_g_dl": "10.5",
      "intra_abdominal_fluid": "false",
      "sex": "male",
      "systolic_mm_hg": "110"
    },
    {
      "base_excess_mmol_l": "-4",
      "fracture_ais": "3",
      "heart_rate_bpm": "110",
      "hemoglobin_g_dl": "10.5",
      "intra_abdominal_fluid": "false",
      "sex": "male",
      "systolic_mm_hg": "110"
    }
  ]
}

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/tash",
  "items": [
    {
      "components": [
        {
          "value": 110,
          "factor": "systolic",
          "points": 1,
          "present": true
        },
        {
          "value": 10.5,
          "factor": "hemoglobin",
          "points": 3,
          "present": true
        },
        {
          "factor": "intra_abdominal_fluid",
          "points": 0,
          "present": false
        },
        {
          "value": 3,
          "factor": "fracture_ais",
          "points": 3,
          "present": true
        },
        {
          "value": 110,
          "factor": "heart_rate",
          "points": 0,
          "present": false
        },
        {
          "value": -4.0,
          "factor": "base_excess",
          "points": 1,
          "present": true
        },
        {
          "value": "male",
          "factor": "male",
          "points": 1,
          "present": true
        }
      ],
      "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": "Yücel N, Lefering R, Maegele M, et al.",
        "doi": "10.1097/01.ta.0000220386.84012.bf",
        "id": "yucel-2006",
        "pmid": "16766965",
        "source": "J Trauma. 2006;60(6):1228-1236",
        "title": "Trauma Associated Severe Hemorrhage (TASH)-Score: probability of mass transfusion as surrogate for life threatening hemorrhage after multiple trauma"
      },
      "formula": "tash",
      "formula_expression": "TASH = SBP (<100:4, <120:1) + Hb g/dL (<7:8, <9:6, <10:4, <11:3, <12:2) + intra-abdominal fluid 3 + fracture AIS (3-4:3, 5:6) + HR>120:2 + BE mmol/L (<-10:4, <-6:3, <-2:1) + male 1; nested less-than highest band only; max 28",
      "max_score": 28,
      "score": 9,
      "sex": "male",
      "systolic_mm_hg": 110,
      "heart_rate_bpm": 110,
      "hemoglobin_g_dl": 10.5,
      "base_excess_mmol_l": -4.0,
      "fracture_ais": 3,
      "intra_abdominal_fluid": false
    },
    {
      "components": [
        {
          "value": 110,
          "factor": "systolic",
          "points": 1,
          "present": true
        },
        {
          "value": 10.5,
          "factor": "hemoglobin",
          "points": 3,
          "present": true
        },
        {
          "factor": "intra_abdominal_fluid",
          "points": 0,
          "present": false
        },
        {
          "value": 3,
          "factor": "fracture_ais",
          "points": 3,
          "present": true
        },
        {
          "value": 110,
          "factor": "heart_rate",
          "points": 0,
          "present": false
        },
        {
          "value": -4.0,
          "factor": "base_excess",
          "points": 1,
          "present": true
        },
        {
          "value": "male",
          "factor": "male",
          "points": 1,
          "present": true
        }
      ],
      "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": "Yücel N, Lefering R, Maegele M, et al.",
        "doi": "10.1097/01.ta.0000220386.84012.bf",
        "id": "yucel-2006",
        "pmid": "16766965",
        "source": "J Trauma. 2006;60(6):1228-1236",
        "title": "Trauma Associated Severe Hemorrhage (TASH)-Score: probability of mass transfusion as surrogate for life threatening hemorrhage after multiple trauma"
      },
      "formula": "tash",
      "formula_expression": "TASH = SBP (<100:4, <120:1) + Hb g/dL (<7:8, <9:6, <10:4, <11:3, <12:2) + intra-abdominal fluid 3 + fracture AIS (3-4:3, 5:6) + HR>120:2 + BE mmol/L (<-10:4, <-6:3, <-2:1) + male 1; nested less-than highest band only; max 28",
      "max_score": 28,
      "score": 9,
      "sex": "male",
      "systolic_mm_hg": 110,
      "heart_rate_bpm": 110,
      "hemoglobin_g_dl": 10.5,
      "base_excess_mmol_l": -4.0,
      "fracture_ais": 3,
      "intra_abdominal_fluid": false
    }
  ]
}

Response

Field	Type	Description
`formula`	string	tash
`formula_expression`	string	Exact expression used
`score`	integer	TASH points 0-28
`max_score`	integer	Always 28
`systolic_mm_hg`	integer	Systolic blood pressure used (mm Hg)
`hemoglobin_g_dl`	number	Hemoglobin used in g/dL (g/L inputs converted as g/dL = g/L / 10)
`intra_abdominal_fluid`	boolean	Caller-assigned FAST / intra-abdominal fluid flag used
`fracture_ais`	integer	Caller-assigned complex long-bone/pelvic fracture AIS used (0, 3, 4, or 5)
`heart_rate_bpm`	integer	Heart rate used (bpm)
`base_excess_mmol_l`	number	Base excess used (mmol/L)
`sex`	string	Sex used: male or female
`components`	array	Per-factor points
`citation`	object	Yücel et al. J Trauma 2006 citation
`disclaimer`	string	Not-a-device notice

Example JSON

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

{
  "components": [
    {
      "value": 110,
      "factor": "systolic",
      "points": 1,
      "present": true
    },
    {
      "value": 10.5,
      "factor": "hemoglobin",
      "points": 3,
      "present": true
    },
    {
      "factor": "intra_abdominal_fluid",
      "points": 0,
      "present": false
    },
    {
      "value": 3,
      "factor": "fracture_ais",
      "points": 3,
      "present": true
    },
    {
      "value": 110,
      "factor": "heart_rate",
      "points": 0,
      "present": false
    },
    {
      "value": -4.0,
      "factor": "base_excess",
      "points": 1,
      "present": true
    },
    {
      "value": "male",
      "factor": "male",
      "points": 1,
      "present": true
    }
  ],
  "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": "Yücel N, Lefering R, Maegele M, et al.",
    "doi": "10.1097/01.ta.0000220386.84012.bf",
    "id": "yucel-2006",
    "pmid": "16766965",
    "source": "J Trauma. 2006;60(6):1228-1236",
    "title": "Trauma Associated Severe Hemorrhage (TASH)-Score: probability of mass transfusion as surrogate for life threatening hemorrhage after multiple trauma"
  },
  "formula": "tash",
  "formula_expression": "TASH = SBP (<100:4, <120:1) + Hb g/dL (<7:8, <9:6, <10:4, <11:3, <12:2) + intra-abdominal fluid 3 + fracture AIS (3-4:3, 5:6) + HR>120:2 + BE mmol/L (<-10:4, <-6:3, <-2:1) + male 1; nested less-than highest band only; max 28",
  "max_score": 28,
  "score": 9,
  "sex": "male",
  "systolic_mm_hg": 110,
  "heart_rate_bpm": 110,
  "hemoglobin_g_dl": 10.5,
  "base_excess_mmol_l": -4.0,
  "fracture_ais": 3,
  "intra_abdominal_fluid": false
}

Client errors (HTTP 400)

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

HTTP	Code	When
400	`invalid_rts_systolic`	systolic_mm_hg must be an integer from 0 to 300. Returned before settlement; you are not charged.
400	`invalid_hemoglobin`	hemoglobin_g_l (30-220) or hemoglobin_g_dl (3-22) is required, not both. Returned before settlement; you are not charged.
400	`invalid_flag`	boolean clinical flags must be true or false Returned before settlement; you are not charged.
400	`invalid_tash_fracture_ais`	fracture_ais must be 0 (none), 3, 4, or 5 (Yücel 2006 AIS for complex long bone and/or pelvic fractures). Returned before settlement; you are not charged.
400	`invalid_heart_rate`	heart_rate_bpm must be an integer from 30 to 220 Returned before settlement; you are not charged.
400	`invalid_base_excess`	base_excess_mmol_l must be a number from -30 to 20. Returned before settlement; you are not charged.
400	`invalid_sex`	sex must be female or male Returned before settlement; you are not charged.
400	`invalid_items`	POST body must be a JSON object with only an items array Returned before settlement; you are not charged.
400	`invalid_item_count`	items must be an array of 1 to 25 objects Returned before settlement; you are not charged.
400	`invalid_item`	each items entry must be a JSON object Returned before settlement; you are not charged.

Related tools

ABC score — Sum the four Nunez 2009 ABC (assessment of blood consumption) arrival factors and return score_ge_2 at the published ≥2 cutoff.
ISS — Compute the Baker 1974 Injury Severity Score as the sum of squares of the three highest caller-assigned AIS body-region grades, or 75 if any region is AIS 6.
RTS — Compute Champion 1989 coded GCS, SBP, and respiratory-rate values, the triage T-RTS sum, and the weighted RTS used for outcome evaluation.

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.
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.