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Doctor insights on: 126 Creatinine Urine

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Can high creatinine levels cause urine foam?

Can high creatinine levels cause urine foam?

See details: Foamy urine usually indicates elevated protein in the urine more than an elevated creatinine. ...Read more

Urine (Definition)

Urine is the product of the kidneys, which is produced to eliminate the waste products of metabolism, manage body fluid balance, &maintain acid-base balance. The blood is first filtered by the kidneys, and the composition of the resulting fluid is then altered depending on the body's needs. It is composed of mostly water, and breakdown products from blood cells impart ...Read more


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What does high creatinine in the urine mean?

What does high creatinine in the urine mean?

Good question: Creatinine in the urine, like in the blood, comes from the muscles. The urine creatinine can be collected for 24 hours to calculate the creatinine clearance. A sample of urine creatinine and protein can be used to estimate the 24h urine loss of protein. ...Read more

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What does hiigh levels of creatinine in my urine mean?

What does hiigh levels of creatinine in my urine mean?

Not much: Urine creatinine is concentrated with dehydration, but is always higher than blood creatinine except in severe kidney desease. The urine creatinine is much higher than blood in a normal state. The importance of urine creatinine is in the calculation of creatinine clearance and fractional excretions. This requires interpretation by your physician. ...Read more

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What else leads to low creatinine levels in the urine?

Factors: Low creatinine levels in the urine can be seen in states like reduced kidney function (low gfr), advanced age, malnourished states, low muscle mass, liver failure, etc. ...Read more

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For what reasons might creatinine levels be high in the urine?

Urine creatinine: Our corresondent is talking about urine creatinine. This may be high because the urine is concentrated (i.e., the person drank little water) or the person is well-muscled. It's not a cause of concern. ...Read more

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I recently had a creatinine urine 24hr test which came out high (2100 mg/24hr). What does this generally signal?

You're fine: Especially if you're a bit more muscular than today's average guy, or a big guy, or you drank a lot of water that day, or it's actually a few more than 24 hours, or you ate an extra serving of meat, i'd consider this normal. The only value in measuring it is to give other substances "per gram of creatinine". ...Read more

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What is a normal urine creatinine level?

No such thing: We don't publish a reference range as people would worry. The more muscle mass you have, the more creatinine you put out daily. The level in turn is also a function of how much water you drink -- whether the urine is concentrated or dilute. And there's no illness for which increased or decreased production is a marker. If you do find a published range, ignore it. ...Read more

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Low creatinine on a urine test, what caused that?

Low creatinine on a urine test, what caused that?

Several things: The most likely is inadequate collection of urine such that some of the 24 hour sample was discarded. Other causes are low muscle mass, which can occur in very small stature people, advanced age, bed bound individuals, and in patients with cirrhosis. ...Read more

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Is a urine creatinine level of 2.04 mmol/L worrysome?

No: Creatinine in the urine is measured only to compare with other substances -- it's an estimate of whether your urine is concentrated or dilute. You may have drunk an extra glass of water. ...Read more

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What causes your urine creatinine to be high in the morning?

What causes your urine creatinine to be high in the morning?

Concentration: Morning urine is usually more concentrated and all urine contents are at a higher level in the morning urine. ...Read more

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I have low urine creatinine at 2.2 mmol/L. What could this mean?

Absolutely nothing: You're probably not a female bodybuilder and you drank a little extra water. I'm glad I could reassure you. ...Read more

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What are the causes of high reading of creatinine in the urine [not blood]?

What are the causes of high reading of creatinine in the urine [not blood]?

A lot of factors: Your kidney function and its filtration rate, what you eat, age, the amount of your muscle mass, liver function, the rate of cell breakdown in your body (catabolism) are some factors that will influence how much creatinine you pee out in the urine. ...Read more

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What does high urine creatinine of 390.1mg/dl mean but everything else is normal?

What does high urine creatinine of 390.1mg/dl mean but everything else is normal?

Dehydration: It appears that you may have dehyrdated cauisng hypernatremic (hypertonic) dehydration. This occurs when the lost fluid contains less sodium than the blood (loss of hypotonic fluid). Relatively less sodium than water is lost. Please be sure blood glucose, sodium and chloride levels were normal. I would see your doctor and have the urine test repeated along with a urinary sodium level. ...Read more

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I'm a 43 year old man and my urine creatinine was measured at 42.4 mmol/L. Is it in safe range?

Yes: Urine creatinine means nothing in any case. It's secreted at a constant rate in proportion to your muscularity. It's merely a reference value to which you compare other analytes. ...Read more

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How to keep creatinine levels above 20 mg/dl? I do not use drugs but need a drug urine test 3 times a week. The level of creatinine must be over 20 mg/dl. I changed nothing in my diet and recently had a level of 14.1 and was told I diluted. I am worrie

The: The most common reason for low creatinine is that you drink a lot of fluids. It is not abnormal to have low creatinine, it's just that the people doing the lab test want the urine concentrated enough that it can pick up trace amounts of the drugs they are testing for. Dilute urine= less of drug in urine sample. Some people have a medical condition that makes them unable to concentrate their urine (low levels of adh (vasopressin), (vasopressin) anti-diuretic hormone) release from the pituitary gland.
If you don't have this condition, then on test days avoid liquids (sips ok, glasses not ok) until after the urine test. Best results would be to avoid liquids 4 hours before test. If creatinine is still low, you might want to see an endocrinologist to evaluate for low adh (vasopressin). If the doctor can validate this, then your employer can't legally hassle you about your low creatinine. ...Read more

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What does it mean when random urine creatinine is high?

This is normal: Creatinine is normally excreted in the urine. The concentration of creatinine by itself means nothing other than the kidneys are doing their job.

Blood creatinine will tell you better how well the kidneys are working. ...Read more

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Why is creatinine measured in a 24 hour urine collection?

Why is creatinine measured in a 24 hour urine collection?

Tell kidney function: Single urine specimens can be tested for creatinine. But daily urine output and urinary concentration varies hence a 24 hr urine collection. Normal creatinine output for an adult should be >1gm/24 hours. Also getting blood creatinine provides optimal way to accurately determine creatine clearance which in turn is a most accurate way to measure kidney function. ...Read more

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Why would adulterant creatinine be high in a urine specimen?

Unclear question: What is adulterant creatinine? I do not see any reasons for a person to add creatinine to a urine sample. ...Read more

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Creatinine was 1.15 then 2 months later 24 hour urine was normal?

Likely no problem.: Your creatinine is within normal range (< 1.5 mg/dl). Normal ranges can vary, but this is well within many. Your 24 urine was normal, which likely means your kidneys are working properly and you likely don't have any diseases, like diabetes, etc. That cause abnormal amounts of urine to be produced. ...Read more

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What is the definition or description of: random urine creatinine?

See below: On a random spot, unlke on a 24 hour urine collection, urine sample, urine creatinine excretion is measured. ...Read more

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Why might it be that we use urine creatinine when caclucating GFR?

Not reabsorbed: Creatinine is used to calculate glomerular filtration rates because the kidney does not reabsorb it: whatever gets filtered into the glomerulus ends up in the urine. So it is a reliable indicator of how much blood has been filtered. All you have to calculate is the volume of blood that contained the amount of creatinine that appeared in the urine over a certain time. ...Read more

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Why would my blood creatinine be low and my urine creatinine be high?

Why would my blood creatinine be low and my urine creatinine be high?

Strong kidneys!: It sounds like your kidneys are working normally. That's what they're supposed to do -- clear metabolic products like creatinine from the blood, dumping it into the urine. The urine level might be especially high if you haven't been drinking lots of fluids lately, i.e. if the urine is relatively concentrated. In any case, this is a good sign, nothing to worry about. ...Read more

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What exactly does it mean when a 67 years old male has 218 ummol/l level of creatinine in urine?

Nothing: This test can not be used without a serum creatinine value, urine volume and hours of collection also help.

By itself it means only that creatinine is present in the urine. ...Read more

Dr. Madhu Kandarpa
2,220 Doctors shared insights

Creatinine (Definition)

Creatinine is a byproduct of creatine phosphate, which is present in muscles. Creatinine levels increase if the ...Read more