Kidney Function Tests, Animation
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- Опубликовано: 30 июл 2024
- (USMLE topics) Kidney labs: blood tests - serum creatinine, blood urea nitrogen (BUN); glomerular filtration rate (GFR), urinalysis, urine albumin test, albumin creatinine ratio (ACR), creatinine clearance.
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Voice by: Ashley Fleming
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The kidneys filter blood plasma, removing metabolic wastes and excrete them in urine. When kidney function declines, waste products accumulate in the blood. Their levels can be measured in blood tests to monitor kidney function. Two substances are usually measured: creatinine, a waste product from the normal turnover of muscles; and urea, the primary nitrogenous waste derived from metabolism of proteins. Blood levels of these substances RISE as kidney function declines.
Blood is filtered in functional units of the kidney called the nephrons. Filtration occurs primarily in the glomerulus of the nephron. The amount of filtrate produced per minute is called glomerular filtration rate, GFR. GFR is an indicator of how well the blood is filtered by the kidneys. GFR is, however, difficult to measure directly. In practice, it is usually calculated as a function of serum creatinine. The formula takes into account the patient’s age, gender and race. A normal GFR is greater than 90 mL per minute. A GFR below 60 is a sign of reduced kidney function. A GFR smaller than 15 represents end-stage renal disease, for which dialysis or a kidney transplant is required.
Urinalysis is a series of urine tests. Urinalysis includes visual, microscopic examination of urine samples, as well as dipstick tests, which measure various substances in urine. The stick shows color changes if certain substances are present or if their levels are above normal. Urinalysis can help detect not only renal disorders but also urinary tract infections and other conditions such as diabetes and liver damage. For kidney function, albumin is tested. Albumin is a blood protein that is not normally passed into urine. Presence of albumin in urine is a sign of renal disease. Urine albumin test can be done as part of urinalysis or as a separate dipstick test. A positive dipstick test is usually followed by an albumin-to-creatinine ratio test, which provides quantitative measurement of urine albumin by comparing it to the amount of creatinine in the urine sample.
Another parameter of kidney function is creatinine clearance, the volume of blood plasma cleared of creatinine per minute. Creatinine clearance test compares the creatinine in total urine collected over 24 hours, to serum creatinine. It can also be estimated based on serum creatinine adjusted for age, gender and weight.
Imaging tests such as ultrasound and CT scan are used to detect obstructions, kidney stones, tumors and abnormal kidney size.
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I don't have to make notes pausing 1 million times. It's already in the description. Thankyou soo much!
Exactly. With the video text provided is a great service. I generally look at the RUclips notes before I attempt my own.
I learn some things your comment do you think
Thank you so much
fantastic job! i like so deeply way of your explanation
You are great! Thank you so much.❤❤
Thank you!
life saving video , thank you
Great content! Easily explained with normal values 🤩
What's the difference between estimated GFR and creatinine clearance?
Great lecture.
Great video, thanks.
Thank you so much, could you do a video for Liver Function Test please.
Great video, thanks
what is the meaning of Urinalysis Blood -Trace
Helpful
Can anyone answer this question?
I had a 7mm stone. my creatinine levels up to 1.9 and after removing the stone my creatinine is now 1.67 and my EGFR level is 49. My just had another blood test 2 weeks after surgery my creatinine and EGFR are still the same. My questions are, now the surgery is fine and my stent is now removed, can I expect my creatinine’s level to go back down and my EGFR to go back up 🔝 to normal? If so, how long will it take approximately?
Useful video.
What does it feel like if you have high creatinine kinase?
Any updates?
Thank you
GFR of 77 at 59 years old mean anything concerning?
Is eGFR not as accurate?
What is meant by d/L
what does mL/min/1.73 >59 mean? am I good
mL of what?
I only know the 59 market . This shows a bordelaise function. Gil is to be above 60, well above
wow tq
Great
Why didn’t mention basic knowledge about why we measure GFR???
Thank u 🙏
Les reins travaile bien ou ne travaile pas bien on peut faire les test. L' analyse d'urine et partient dure maladie qui est la premire problem est la descision de l" enfectio. En urine la fin donner anthibiotics pour le protection
may l buy kidney my because when I was a child l operation and my kidneys removed 😥
Thanks so much for sharing this helpful animated video! Please also check out our video about The Kidney Disease Solution Program. It's already helped over 25,000 people with kidney disease to completely turn their health around, they have lowered creatinine levels and increased GFR, and it can help us/others too.
Does anyone else wake up frequently to pee at night?
Yes
Yes
most of the people do
After taking this juice (organic green apple blendered with cucumber, squeeze of lemon, ginger and bit of parsley) the back pain go away but it will come back after 1 week ++. And less urination too
Peeing frequently is the body trying to get rid of the excess sugar in your diet, cut the sugar bro, its mire addictive than krak.
My husband's score was 67. Should we be concerned?
{{{}}} BE BLESSED WITH BENEVOLENT & SOUND KIDNEYS THAT FUNCTIONS WITH DILIGENT_DILIGENCE LIFE ,POWERFUL-POWER & PURE_PURITIE. + VITALITY {{{}}} TO PROSPER -BE PROSPEROUS WITH PROSPERITY & TO THRIVE.
°°°|||
👍
My creatinine is 1.27 😢
My creatinine is 1.5 😬
what is your eGFR reading
@@VengefulQuietOne What is your eGFR reading
my blood group b positive age 24 donate my kidney
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❤️
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Hindi m btao
T5
Why do we still consider race when making calculations?
Bcz presence of relative higher levels of renin in Afro-American race
@@boneless8323 Can you send me that study?
@@paulbakerjr.4428 You can find it on the internet.
@@farshimelt I couldn't find it, thats why I asked for the study so I can read about it.
@@daveengel5751 I didn’t mention anything about it being racist, I did mention wanting to see the scientific proof of this claim.
Avoid 🍸🍺🍹🍷🍻😈 😷.fan