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ALBI Grade Calculator (Johnson 2015)
x402
ALBI Grade Calculator (Johnson 2015) 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).
Computes the albumin-bilirubin (ALBI) score and grade (1–3) from serum total bilirubin and albumin using the Johnson 2015 formula.
Price / call$0.005
Success—
StatusUnknown
How this service works
Johnson 2015 albumin-bilirubin (ALBI) grade from total bilirubin and albumin. xb = 0.66*log10(bilirubin umol/L) + albumin_g_l*(-0.085). Grade 1 if xb <= -2.60, grade 2 if xb <= -1.39, else 3. Returns albi_score (4 decimals) and albi_grade. Not a listing protocol, Child-Pugh, survival estimate, mALBI, PALBI, or EZ-ALBI.
Output
Returns a JSON object with `albi_score` (numeric, rounded to 4 decimal places) and `albi_grade` (integer 1, 2, or 3), where grade 1 indicates best preserved liver function (xb ≤ −2.60), grade 2 moderate impairment (xb ≤ −1.39), and grade 3 severe impairment.
Example use cases
HCC treatment eligibility screening
“My patient has albumin 32 g/L and total bilirubin 42 µmol/L — what is their ALBI score and grade for hepatocellular carcinoma assessment?”
Converting US lab units to ALBI grade
“I have bilirubin 1.8 mg/dL and albumin 3.9 g/dL from an American lab report — can you calculate the ALBI grade for me?”
Liver function reserve before locoregional therapy
“Before planning TACE for this patient, I need their ALBI grade — albumin is 28 g/L and bilirubin is 68 µmol/L.”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/albiWhen to prefer
Use this endpoint when you need the exact Johnson 2015 ALBI grade (1, 2, or 3) for hepatocellular carcinoma or liver disease assessment and have serum albumin and total bilirubin values available. Prefer this over Child-Pugh when a simpler, objective two-variable score is needed. Do not use for mALBI, PALBI, EZ-ALBI, Child-Pugh, or survival estimation.
Side effects
- Missing both albumin parameters returns an error
- Missing both bilirubin parameters returns an error
- Providing both albumin_g_l and albumin_g_dl simultaneously is rejected
- Providing both bilirubin_umol_l and bilirubin_mg_dl simultaneously is rejected
- Out-of-range values (e.g. albumin outside 10–60 g/L) may return validation errors
- Payment failure (402) if x402 USDC payment header is missing or insufficient
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"path": "/api/calc/albi",
"count": 2,
"items": [
{
"formula": "albi",
"citation": {
"id": "johnson-2015",
"doi": "10.1200/JCO.2014.57.9151",
"pmid": "25512453",
"title": "Assessment of liver function in patients with hepatocellular carcinoma: a new evidence-based approach-the ALBI grade",
"source": "J Clin Oncol. 2015;33(6):550-558",
"authors": "Johnson PJ, Berhane S, Kagebayashi C, et al."
},
"albi_grade": 1,
"albi_score": -2.74,
"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.",
"albumin_g_l": 40,
"bilirubin_umol_l": 10,
"formula_expression": "albi_score = (log10(bilirubin_umol_l) * 0.66) + (albumin_g_l * -0.085)"
},
{
"formula": "albi",
"citation": {
"id": "johnson-2015",
"doi": "10.1200/JCO.2014.57.9151",
"pmid": "25512453",
"title": "Assessment of liver function in patients with hepatocellular carcinoma: a new evidence-based approach-the ALBI grade",
"source": "J Clin Oncol. 2015;33(6):550-558",
"authors": "Johnson PJ, Berhane S, Kagebayashi C, et al."
},
"albi_grade": 1,
"albi_score": -2.74,
"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.",
"albumin_g_l": 40,
"bilirubin_umol_l": 10,
"formula_expression": "albi_score = (log10(bilirubin_umol_l) * 0.66) + (albumin_g_l * -0.085)"
}
]
}
}Tags
x402
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