. 2013 Oct 11;8:1387–1391. doi: 10.2147/CIA.S52774

Table 1.

GFR predicting equations

Basis of equation and sex	Serum creatinine	CYC	Equation for estimating GFR
Cockcroft–Gault equation¹³
			(140 − Age) × Weight ÷ SC ÷ 72 × [0.85 if female] × 1.73 ÷ BsA
Re-expressed 4-variable MDRD equation¹⁴
			175 × SC^−1.154 × Age^−0.203 × [0.742 if female] × [1.212 if Black]
CKD-EPI creatinine equation¹⁵
Female	≤0.7		144 × (SC ÷ 0.7)^−0.329 × 0.993^Age [× 1.159 if Black]
Female	>0.7		144 × (SC ÷ 0.7)^−1.209 × 0.993^Age [× 1.159 if Black]
Male	≤0.9		141 × (SC ÷ 0.9)^−0.411 × 0.993^Age [× 1.159 if Black]
Male	>0.9		141 × (SC ÷ 0.9)^−1.209 × 0.993^Age [× 1.159 if Black]
CKD-EPI creatinine–cystatin C equation⁵
Female	≤0.7	≤0.8	130 × (SC ÷ 0.7)^−0.248 × (CYC ÷ 0.8)^−0.375 × (0.995)^Age × [1.08 if Black]
		>0.8	130 × (SC ÷ 0.7)^−0.248 × (CYC ÷ 0.8)^−0.711 × (0.995)^Age × [1.08 if Black]
Female	>0.7	≤0.8	130 × (SC ÷ 0.7)^−0.601 × (CYC ÷ 0.8)^−0.375 × (0.995)^Age × [1.08 if Black]
		>0.8	130 × (SC ÷ 0.7)^−0.601 × (CYC ÷ 0.8)^−0.711 × (0.995)^Age × [1.08 if Black]
Male	≤0.9	≤0.8	135 × (SC ÷ 0.9)^−0.207 × (CYC ÷ 0.8)^−0.375 × (0.995)^Age × [1.08 if Black]
		>0.8	135 × (SC ÷ 0.9)^−0.207 × (CYC ÷ 0.8)^−0.711 × (0.995)^Age × [1.08 if Black]
Male	>0.9	≤0.8	135 × (SC ÷ 0.9)^−0.601 × (CYC ÷ 0.8)^−0.375 × (0.995)^Age × [1.08 if Black]
		>0.8	135 × (SC ÷ 0.9)^−0.601 × (CYC ÷ 0.8)^−0.711 × (0.995)^Age × [1.08 if Black]

Abbreviations: BSA, body surface area; CYC, cystatin C; CKD-EPI, Chronic Kidney Disease Epidemiology Collaboration; GFR, glomerular filtration rate; MDRD, Modification of Diet in Renal Disease; SC, serum creatinine.