Skip to main content
Exact Dx synthetic data · demonstration

← How it decides

eGFR, CKD-EPI 2009 creatinine equation (drift check only; race coefficient omitted)

The older 2009 equation, shown only to see whether the answer depends on the equation.

Rule and version
ckd_epi_2009@1.0
Published source
Levey AS, Stevens LA, Schmid CH, et al. A new equation to estimate glomerular filtration rate. Ann Intern Med 2009;150:604-12. The race coefficient is omitted here. https://www.acpjournals.org/doi/10.7326/0003-4819-150-9-200905050-00006
Edition
Levey et al., Ann Intern Med 2009;150:604-12 (2009 eGFR equation, drift check)
Effective
from 2009-05-05
Role
drift check: shown beside the 2021 result, never used on its own
Status
draft: encoded from the published source; not yet signed off by a clinical reviewer
Clinical reviewer
—
Coding reviewer
—
Sponsor
none
Body hash
fee2ce2be035c1b64d4404d5f2e9cfa8cdd37c98dac9d20c4148c9d2c45560d5

Thresholds and parameters

{
  "age": "whole years at the collection date",
  "age_base": 0.993,
  "alpha": {
    "F": -0.329,
    "M": -0.411
  },
  "exp_above": -1.209,
  "female_factor": 1.018,
  "formula": "eGFR = 141 x min(Scr/k, 1)^a x max(Scr/k, 1)^-1.209 x 0.993^age x 1.018 [if female]",
  "intercept": 141,
  "kappa": {
    "F": 0.7,
    "M": 0.9
  },
  "loinc_creatinine": "2160-0",
  "report_decimals": 1,
  "unit": "mg/dL"
}

Boundary tests: 6/6 pass