. 2014 Mar 20;2014:916542. doi: 10.1155/2014/916542

Table 2.

Equations for estimating renal function.

Cockcroft and Gault [69]	eCCr = (140−age) × weight in kg/(72 × Scr), ×0.85 in females

Six-variable MDRD [71]	170 ∗ [Scr]^−0.999 ∗ [age]^−0.176 ∗ [BUN]^−0.170 ∗ [serum albumin]^0.318, ∗0.762 in females, ∗1.180 if black

Four-variable MDRD [71]	[186.3 × (Scr)^−1.154 × (age)^−0.203], ×0.742 in females, ×1.212 if black

CKD-EPI (creatinine) [77]	Female (Scr ≤ 0.7), eGFR = 144 × (Scr/0.7)^−0.329 × (0.993)^Age (Scr > 0.7), eGFR = 144 × (Scr/0.7)^−1.209 × (0.993)^Age Male (Scr ≤ 0.9), eGFR = 141 × (Scr/0.9)^−0.411 × (0.993)^Age (Scr > 0.9), eGFR = 141 × (Scr/0.9)^−1.209 × (0.993)^Age

CKD-EPI (cystatin C) [80]	(Scys ≤ 0.8), eGFR = 133 × (Scys/0.8)^−0.499 × 0.996^Age [×0.932 if female] (Scys > 0.8), eGFR = 133 × (Scys/0.8)^−1.328 × 0.996^Age [×0.932 if female]

CKD-EPI (cystatin C-creatinine) [80]	Female (Scr ≤ 0.7) (Scys ≤ 0.8), eGFR = 130 × (Scr/0.7)^−0.248 × (Scys/0.8)^−0.375 × 0.995^Age [×1.08 if black] (Scr ≤ 0.7) (Scys > 0.8), eGFR = 130 × (Scr/0.7)^−0.248 × (Scys/0.8)^−0.711 × 0.995^Age [×1.08 if black]
	Female (Scr > 0.7) (Scys ≤ 0.8), eGFR = 130 × (Scr/0.7)^−0.601 × (Scys/0.8)^−0.375 × 0.995^Age [×1.08 if black] (Scr > 0.7) (Scys > 0.8), eGFR = 130 × (Scr/0.7)^−0.601 × (Scys/0.8)^−0.711 × 0.995^Age [×1.08 if black]
	Male (Scr ≤ 0.9) (Scys ≤ 0.8), eGFR = 135 × (Scr/0.9)^−0.207 × (Scys/0.8)^−0.375 × 0.995^Age [×1.08 if black] (Scr ≤ 0.9) (Scys > 0.8), eGFR = 135 × (Scr/0.9)^−0.207 × (Scys/0.8)^−0.711 × 0.995^Age [×1.08 if black]
	Male (Scr > 0.9) (Scys ≤ 0.8), eGFR = 135 × (Scr/0.9)^−0.601 × (Scys/0.8)^−0.375 × 0.995^Age [×1.08 if black] (Scr > 0.9) (Scys > 0.8), eGFR = 135 × (Scr/0.9)^−0.601 × (Scys/0.8)^−0.711 × 0.995^Age [×1.08 if black]

BIS1 [81]	3736 × creatinine^−0.87 × age^−0.95 × 0.82 (if female)

BIS2 [81]	767 × cystatin C^−0.61 × creatinine^−0.40 × age^−0.57 × 0.87 (if female)

eCCr: estimated creatinine clearance; Scr: serum creatinine; BUN: blood urea nitrogen; Scys: serum cystatin C; MDRD: Modification of Diet in Renal Disease; CKD-EPI: Chronic Kidney Disease Epidemiological Collaboration; BIS: Berlin Initiative Study.