Chen 2013 kinetic eGFR (KeGFR) from two plasma creatinines, hours between them,
Chen 2013 kinetic eGFR (KeGFR) from two plasma creatinines, hours between them, caller-assigned steady-state creatinine and corresponding eGFR/CrCl, and required max_delta_pcr_mg_dl_day (Chen usual default 1.5). KeGFR = (SSPCr * CrCl / MeanPCr) * (1 - 24*dPCr / (dTime_hours * MaxdPCr/Day)), clamped at 0 when that (1 - ratio) term is negative. Creatinine mg/dL only. Not a CKD-EPI result. Not a dialysis prescription. magent does not compute MDRD or CKD-EPI.
Asked 1.4x its listed price for its own exampleour last check, 2026-09-28
1 of 1checks answered this week
275 msmedian answer time
$0.005listed price per call
$0.007price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.magentlab.com/api/calc/kegfr
| Category | Everything else |
|---|---|
| Provider host | api.magentlab.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-28 | valid payment request | 402 | $0.007 | 275 ms |
Example input (from the provider)
{
"body": {
"items": [
{
"creatinine_1_mg_dl": 1,
"creatinine_2_mg_dl": 1,
"delta_hours": 24,
"max_delta_pcr_mg_dl_day": 1.5,
"steady_state_creatinine_mg_dl": 1,
"steady_state_egfr": 90
},
{
"creatinine_1_mg_dl": 1,
"creatinine_2_mg_dl": 1,
"delta_hours": 24,
"max_delta_pcr_mg_dl_day": 1.5,
"steady_state_creatinine_mg_dl": 1,
"steady_state_egfr": 90
}
]
},
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"items": {
"items": {
"properties": {
"creatinine_1_mg_dl": {
"description": "First plasma creatinine in mg/dL (0.1-20). mg/dL only.",
"type": "number"
},
"creatinine_2_mg_dl": {
"description": "Second plasma creatinine in mg/dL (0.1-20). mg/dL only.",
"type": "number"
},
"delta_hours": {
"description": "Hours between creatinine_1 and creatinine_2 (1-72). Chen: endpoints <48-72 h apart.",
"type": "number"
},
"max_delta_pcr_mg_dl_day": {
"description": "Maximum creatinine rise per day in mg/dL (0.5-3). Chen usual default 1.5. Required; magent does not omit it.",
"type": "number"
},
"steady_state_creatinine_mg_dl": {
"description": "Steady-state plasma creatinine in mg/dL (0.1-20) corresponding to steady_state_egfr. mg/dL only.",
"type": "number"
},
"steady_state_egfr": {
"description": "Caller-assigned eGFR/CrCl in mL/min corresponding to steady_state_creatinine_mg_dl (5-200). magent does not compute MDRD or CKD-EPI.",
"type": "number"
}
},
"required": [
"creatinine_1_mg_dl",
"creatinine_2_mg_dl",
"delta_hours",
"steady_state_creatinine_mg_dl",
"steady_state_egfr",
"max_delta_pcr_mg_dl_day"
],
"type": "object"
},
"maxItems": 25,
"minItems": 1,
"type": "array"
}
},
"required": [
"items"
],
"type": "object"
},
"headers": {
"additionalProperties": {
"type": "string"
},
"type": "object"
},
"method": {
"const": "POST",
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}