About how much blood do your kidneys filter in a single day?
Answerabout 150 quarts
Only 1 to 2 quarts of that becomes urine in adults.
Source: NIDDK, Your Kidneys & How They Work niddk.nih.gov
Health · Facts & sources
Kidney facts & stats
6 sourced facts about kidneys and kidney health, each with the context behind the number. 4 more are in today's round and appear here after it closes.
The basics
How often is another person added to the U.S. organ transplant waiting list?
Answerevery 7 minutes
HRSA also reports that every donor can save up to 8 lives.
Source: HRSA, OrganDonor.gov organdonor.gov
Going deeper
What share of U.S. adults with chronic kidney disease don't know they have it?
Answer87%
That's about 9 in 10 adults with CKD, according to CDC estimates.
Source: CDC, Chronic Kidney Disease in the United States cdc.gov
About how many people were on the U.S. waiting list for a kidney transplant in late 2024?
Answer90,323 (November 2024)
Kidneys account for the majority of the roughly 110,000 people on the national transplant waiting list.
Source: NIDDK, Kidney Disease Statistics for the United States (2024) niddk.nih.gov
Expert level
What share of Americans living with kidney failure are treated with dialysis rather than a transplant?
Answer68%
More than 808,000 people in the U.S. live with kidney failure; 32% have a kidney transplant.
Source: NIDDK, Kidney Disease Statistics for the United States (2024) niddk.nih.gov
How many kidney transplants were performed in the U.S. in 2023?
Answer27,332
Across all organs, more than 49,000 transplants were performed in the U.S. in 2025.
Source: NIDDK, Kidney Disease Statistics for the United States (2023) niddk.nih.gov
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