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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.

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.

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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.

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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.

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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.

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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".

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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.

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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.

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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.

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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.

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Is alcohol tested by the level of creatinine level in your urine?

Is alcohol tested by the level of creatinine level in your urine?

No: There must be a misunderstanding. I'm sorry for the confusion.

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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.

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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.

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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.

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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.

Dr. Madhu Kandarpa
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Creatinine (Definition)

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