Doctor insights on:
24 Hour Urine Creatinine Calculation
Is 3822.00 mmol/l normal 24- hour urine creatinine? Is 200.1ug/24h normal cortisol level for 24 hour urine test?
Normal urine creatinine (24-hour sample) values range from 7-21 mmol/day (males) and 5-16 mmol/day (females). Results depend greatly on your age and amount of lean body mass.
Normal urine 'free' cortisol (24-hour sample) is usually less than 50 ug (=mcg). ...Read more
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
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
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
Will drinking alcohol the day before you do a 24 hour urine collection for cortisol and creatinine alter the results?
No: In moderation this should not be a problem. ...Read more
Urinalysis, trace of protein. Creatinine clearence was good, even 24 hour protein, but spot urine had high protein value. Cause?
Husband has 3.0 creatinine level (ref range is 2.5 and under) with 24 hour urine test. Protein, uric acid in urine normal. Kidney us found small hyperechoic foci in kidneys and 1 cyst in left kidney?
Severe disease: Your husband has severe chronic renal failure and needs to be under the care of a nephrologist. ...Read more
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
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
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
Muscle is muscle: There is a trace amount of creatine and creatinine in muscle meats which contributes slightly to urine creatinine, but most of it comes from the production of creatine in your own muscle. Creatine is used for short term storage of energy as creatine phosphate and some leaks out of your muscles every day. After a loading dose of 25 g per day for a week, 5 g creatine per day helps muscles work. ...Read more
My urine creatinine was 20 when 4 months ago it was 73, my BUN level was 7. What could be causing this?
This means nothing: Urine creatinine varies with your hydration. You excrete a certain amount daily depending mostly on your muscle mass. Drink twice as much water, and you cut your creatinine in half. It's worth measuring only as a standard against which to compare other elements measured in your urine. A "low BUN" means nothing. You're not a kidney patient. I'm sorry no one explained this to you. ...Read more
Random urine chemistry:-urine creatinine=10.5mmol/l. Acr (microalbumin//creatinine ratio=1.0mg/mmol is it ok?
You're okay: Microalbuminuria is usually considered present when it's >2.5 for a man, 3.5 for a woman. ...Read more
What means an urine-to plasma creatinine ratio > 200? My urine creatinine was 171mg/dl, serum creatinine 0.8mg/dl, ratio:213.
Nothing: This is a meaningless number that is primarily a function of how much water you were drinking. It's used to help calculate other labs. ...Read more
Kindly interpret: my random urine albumin: less than 5.0 mg/l, random urine creatinine: less than 15.0 mg/dl. What is my albuminl:creatinine ratio?
Check again.: These readings seem more like those in serum although they are far below normal levels for Albumin and above normal for creatinine. The normal levels are 3.5-5.0 g/dl and <1.5 mg/dl for serum Albumin and creatinine respectively. The urine protein levels are <150 mg/day and creatinine is 1.0-1.6 g/day. The normal range of urine output is 0.4-3.0 l/day. These are low normal at most so recheck. ...Read more
Creatinine Clearance test - creatinine 1.2 & result was 140 of 24hr urine creatinine clearance - scale 66 - 143 is this high or does it mean v good?
Creatinine clearance: The results are normal. Don't worry!Get a more detailed answer ›
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
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
See below: On a random spot, unlke on a 24 hour urine collection, urine sample, urine creatinine excretion is measured. ...Read more
Dear dr. My greandfather is 88 yrs old his urine creatinine is 4.7 so it's need to do kendy dialysis?
Likely: Ifnot now he is getting close.Get a more detailed answer ›
C prior answers: The random urine creatinine can give an approximation of urine function. Vma. .. Perhaps you are referring here to chemical in the urine when, if high, may indicate an tumor known as pheochromocytoma, which is benign, but produces a substance which can cause huge increases in blood pressure, that can have serious consequences. ...Read more
I had a 24hour urine creatinine test cancelled. Reason given on report was "antigen positive". What does this mean?
Uncertain: This is an unusual/uncommon reason for cancelling a 24-hour urine creatinine test that I have not seen before. There are a variety of medications that can potentially affect this test but reason for "antigen positive" is unknown to me. I would suggest contacting your ordering physician (or lab) so as to get an explanation. ...Read more
Why is it so hard to find out normal urine creatinine and calcium levels for a 5 yr old if 3, 3 creatinine, 2.4 calcium. What is norm? Shud I worry?
Worthless number: The total creatinine put out varies primarily with the total mass of skeletal muscle. You'll never find a "normal" value for either. The concentration is even more variable as it depends on how much water was drunk. The urine creatinine is measured only as something to compare with a semi-constant, the creatinine. People aren't numbers, and we do a disservice focusing on labs apart from history. ...Read more
Urine creatinine 24hour is 18.5 (7.1-17.7mmol/d) and my urine protein 24hour is 0.14 (<0.15g/d), I have IgM k monocloncal protein in b2 what is this?
Stop worrying: Reference ranges are where most people fall; there's no reason at all to get upset about a trivially high creatinine on a test that is done only to make a ratio with the albumin, which seems quite normal, thanks. My own guess is that your physician is eager to reassure you, and i'd urge you to accept this. There's much good in your life & future -- keep your eyes there. ...Read more
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