eGFR by age and sex

What’s typical for eGFR at every adult age, from a U.S. government health survey of 19,128 people, next to the usual ranges labs print.

NHANES 2015–2016, 2017–March 2020 (pre-pandemic), August 2021–August 202319,128 adultsAI-verified against cited sources. Awaiting expert review

What’s typical at one age

Pick a sex and an age to see the spread among U.S. adults like that, and type a result to see where it falls.

Age: 45

U.S. women aged 40–49

1,529 people in NHANES, 2015–2016, 2017–March 2020 (pre-pandemic), August 2021–August 2023.

Median (half are lower): 104 mL/min/1.73 m²
Middle half of people: 91 to 111
Middle 90% of people: 73 to 117
Usual range a lab prints: 60 to above

Shaded: the middle 90% and middle half of people. Dark line: the median. The bracket above: the usual range.

Your result (optional, in mL/min/1.73 m²)

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Across adult life

NHANES describes the US civilian, non-institutionalized population, not a 'healthy' reference group. People with disease, on medication, fasting or not (except fasting-subsample markers), smokers and so on are all included. A percentile says where a value sits among Americans of that sex and age, not whether it is normal.

How eGFR varies with age in the U.S.Shaded: middle 90% and middle 50% of people. Line: the median. mL/min/1.73 m². Point at any age, or focus the chart and use the arrow keys, to read both sexes in words.

Reference data derived from CDC/NCHS National Health and Nutrition Examination Survey (NHANES), cycles 2015-2016, 2017-March 2020 (pre-pandemic), August 2021-August 2023. Analysis by bloodtesttracker.com; not endorsed by CDC, NCHS or HHS.

Every percentile

Download this table (CSV)

The 25th percentile means a quarter of people in that group had a lower result. In mL/min/1.73 m². A dash means too few people were measured for the survey to publish that number.

Women

eGFR percentiles for U.S. women by age, in mL/min/1.73 m², NHANES 2015–2016, 2017–March 2020 (pre-pandemic), August 2021–August 2023
Age	People	2.5th	5th	10th	25th	Median	75th	90th	95th	97.5th
18–29	1,683	84	90	96	108	122	127	131	133	136
30–39	1,515	75	81	85	98	112	119	122	124	127
40–49	1,529	67	73	78	91	104	111	115	117	119
50–59	1,635	57	63	69	83	96	104	108	110	112
60–69	1,920	46	54	60	71	84	97	100	102	104
70–79	1,083	37	42	49	61	75	90	94	95	97
80+	585	26	32	42	54	66	79	88	90	91
All adults	9,950	48	57	66	82	99	112	123	127	130

Men

eGFR percentiles for U.S. men by age, in mL/min/1.73 m², NHANES 2015–2016, 2017–March 2020 (pre-pandemic), August 2021–August 2023
Age	People	2.5th	5th	10th	25th	Median	75th	90th	95th	97.5th
18–29	1,640	81	87	93	104	119	126	130	133	135
30–39	1,305	73	80	87	98	110	117	120	122	124
40–49	1,311	67	74	78	89	101	109	113	116	118
50–59	1,427	58	64	70	82	95	103	107	110	112
60–69	1,803	50	57	64	74	87	97	101	104	105
70–79	1,129	38	45	52	64	77	89	93	96	98
80+	563	28	33	40	54	67	80	88	90	92
All adults	9,178	52	60	69	84	98	111	122	127	130

About these numbers

NHANES describes the US civilian, non-institutionalized population, not a 'healthy' reference group. People with disease, on medication, fasting or not (except fasting-subsample markers), smokers and so on are all included. A percentile says where a value sits among Americans of that sex and age, not whether it is normal.
Assays differ between labs and between NHANES cycles. Values from a commercial lab can sit a few percent higher or lower than NHANES for the same blood. Earlier cycles were bridged to the 2021-2023 method with NCHS equations where NCHS recommends it.
Age 80 and over is top-coded at 80 in public NHANES files, so the 80+ cell mixes everyone 80 and older.
2021-2023 (cycle L) had a 25.7% exam response rate and no race/income oversampling; NCHS advises caution when combining it with earlier cycles.
Derived: CKD-EPI 2021 race-free creatinine equation (Inker 2021) on bridged serum creatinine. Age 80+ is top-coded at 80 in public NHANES, so eGFR for that group is computed at age 80.

Centers for Disease Control and Prevention (CDC). National Center for Health Statistics (NCHS). National Health and Nutrition Examination Survey Data. Hyattsville, MD: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, 2015-2016, 2017-March 2020 (pre-pandemic), August 2021-August 2023. https://wwwn.cdc.gov/nchs/nhanes/

How we use survey data

The usual range at every age

The reference range labs print, for each age group. Ranges differ a little between labs, so the range on your own report is the one your result is judged against.

Usual range of eGFR by age, in mL/min/1.73 m²
Who	Usual range
2–17	90 and above mL/min/1.73 m²
18+	60 and above mL/min/1.73 m²
18+	60 and above mL/min/1.73 m²

Sources: Kidney International 105(4S):S117-S314, ARUP Laboratories, Mayo Clinic Laboratories, National Kidney Foundation, Nemocnice Na Bulovce, Prague