myCSG © |Area: TASKS| Concept: Lab : Lab: Laboratory data concepts | Lesson: L101 : Derivation of eGFR using Serum Creatinine value using various methods |
Lesson description will be added soon
| METHOD | FORMULA_FOR_EGFR_DERIVATION | VARIABLE_LABEL |
|---|---|---|
| CKD-EPI | eGFR = 141 * min(SCr/k,1)**a * max(SCr/k,1)**-1.209 * 0.993**Age * [1.018 if female] * [1.159 if black] Where: - SCr = serum creatinine (mg/dL; to convert from umol/L to mg/dL, multiply the umol/L value by 0.0113) - k = 0.7 for females and 0.9 for males - a = -0.329 for females and -0.411 for males - min = the minimum of SCr/k or 1 - max = the maximum of SCr/k or 1 |
|
| MDRD | eGFR mL/min/1.73m2=a * SCr**-1.154 * age**-0.203 * [1.210if black] * [0.742if female] Where: - SCr = serum creatinine (mg/dL; to convert from umol/L to mg/dL, multiply the umol/L value by 0.0113) - a = 186 if scr_unit="mg/dL", 32788 if scr_unit="umol/L" |
|
| Based on Cystatin C | eGFR =133 * (PCysC/0.8)**a * 0.996**Age * (0.932 if female) Where: - PCysC = Plasma Cystatin C in mg/L - a = -0.499 if PCysC <= 0.8 mg/L, -1.328 if PCysC > 0.8 mg/L |
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