24-hour urine protein measures the amount of protein excreted in urine over a 24-hour period.
See also: Bence-Jones protein test
Alternative NamesUrine protein - 24 hour
How the test is performedA 24-hour urine sample is needed.
For an infant, thoroughly wash the area around the urethra. Open a urine collection bag (a plastic bag with an adhesive paper on one end), and place it on the infant. For males, place the entire penis in the bag and attach the adhesive to the skin. For females, place the bag over the labia. Diaper as usual over the secured bag.
This procedure may take a couple of attempts -- lively infants can move the bag, causing the urine to be absorbed by the diaper. The infant should be checked frequently and the bag changed after the infant has urinated into the bag. Drain the urine from the bag into the container provided by your health care provider.
Deliver it to the laboratory or your health care provider as soon as possible upon completion.
How to prepare for the testYour health care provider will instruct you, if necessary, to stop taking any drugs that may interfere with the test results.
Drugs that may interfere with test results include:
If the collection is being taken from an infant, a couple of extra collection bags may be needed.
How the test will feelThe test involves only normal urination, and there is no discomfort.
Why the test is performedYour doctor may order this test if you have signs or symptoms of glomerular disease, such as nephrotic syndrome, or another condition that affects kidney function.
Additional conditions under which the test may be performed include complicated UTI (pyelonephritis).
Normal ValuesThe normal value is less than 150 milligrams per day, or less than 10 milligrams per deciliter of urine.
Note: Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.
What abnormal results meanIncreased levels of urinary protein may be due to:
Healthy people may have higher than normal urine protein levels after strenuous exercise or with dehydration. Some foods may affect urine protein levels.
What the risks areThe test involves normal urination and there are no risks.
Special considerationsSometimes, in order to avoid the inconvenience and possible inaccuracy of a 24-hour urine collection, your doctor may order a test done on a just one urine sample, called the protein-to-creatinine ratio. ReferencesBazari H. Approach to the patient with renal disease. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 115.
Urine should certainly not contain more protein in it than a protein shake. If there are too high levels of protein in the urine, it is known as proteinuria.
urine protein X 24 hr urine volume/ 100
Protein in the urine is called proteinuria, and is very serious. Have it seen to, promptly.
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To calculate 24-hour urine protein, collect all urine over a 24-hour period and measure the total volume. Then, use a laboratory test to determine the total protein concentration in the urine. The formula is: Total Urine Protein (mg) = Urine Protein Concentration (mg/dL) × Total Urine Volume (dL). This provides the total protein excretion over 24 hours, typically expressed in milligrams.
Small amounts of protein usually aren't a cause for concern. Larger amounts of protein in the urine may indicate a kidney problem. Protein is often found in the urine of young people after they exorcise.
The end-product excreted in urine from protein metabolism is urea.
Protein should not be found in the urine. Cause it may mean that your kidney is having a problem with its filtering of substances like protein and BUN.
The amount of protein in your urine that is healthy varies from person to person. Some healthy people spill protein in their urine regularly. Talk with your health care provider for advice specific to your situation.
A protein-rich diet typically causes the urine to become more acidic. This is because protein metabolism produces acidic byproducts that are excreted through urine, leading to a decrease in urine pH.
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Uric acid is a by product of protein digestion and can be found in the urine.