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Urine specific gravity is a laboratory test that measures the concentration of all chemical particles in the urine.
See also:
Alternative NamesUrine density
How the test is performedThe test requires a clean-catch urine sample. For information on how to collect this urine sample, see: Clean-catch urine culture
How to prepare for the testYour health care provider will instruct you, if necessary, to discontinue drugs that may interfere with the test. Drugs that can increase specific gravity measurements include dextran and sucrose. Receiving intravenous dye (contrast medium) for an x-ray exam up to 3 days before the test can also interfere with results.
Eat a normal, balanced diet for several days before the test.
How the test will feelThe test involves only normal urination, and there is no discomfort.
Why the test is performedThis test helps evaluate your body's water balance and urine concentration.
Normal ValuesNormal values are between 1.020 to 1.028.
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 urine specific gravity may be due to:
- Addison's disease (rare)
- Dehydration
- Diarrhea that causes dehydration
- Glucosuria
- Heart failure(related to decreased blood flow to the kidneys)
- Renal arterial stenosis
- Shock
- Syndrome of inappropriate antidiuretic hormone secretion (SIADH)
Decreased urine specific gravity may be due to:
- Aldosteronism (very rare)
- Excessive fluid intake
- Diabetes insipidus - central
- Diabetes insipidus - nephrogenic
- Renal failure
- Renal tubular necrosis
- Severe kidney infection (pyelonephritis)
Additional conditions under which the test may be performed:
- Complicated UTI (pyelonephritis)
- High blood sodium level
- Low blood sodium level
- Excessive urination
Osmolality is a more specific test for urine concentration. However, the specific gravity measurement is easier and more convenient and usually part of a routine urinalysis. It frequently makes the osmolality measurement unnecessary.
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.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoUrine specific gravity is a laboratory test that measures the concentration of all chemical particles in the urine.
See also:
Alternative NamesUrine density
How the test is performedThe test requires a clean-catch urine sample. For information on how to collect this urine sample, see: Clean-catch urine culture
How to prepare for the testYour health care provider will instruct you, if necessary, to discontinue drugs that may interfere with the test. Drugs that can increase specific gravity measurements include dextran and sucrose. Receiving intravenous dye (contrast medium) for an x-ray exam up to 3 days before the test can also interfere with results.
Eat a normal, balanced diet for several days before the test.
How the test will feelThe test involves only normal urination, and there is no discomfort.
Why the test is performedThis test helps evaluate your body's water balance and urine concentration.
Normal ValuesNormal values are between 1.002 to 1.030.
The examples above are common measurements for results of these tests. Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or test different samples. Talk to your doctor about the meaning of your specific test results.
What abnormal results meanIncreased urine specific gravity may be due to:
- Addison's disease (rare)
- Dehydration
- Diarrhea that causes dehydration
- Glucosuria
- Heart failure(related to decreased blood flow to the kidneys)
- Renal arterial stenosis
- Shock
- Syndrome of inappropriate antidiuretic hormone secretion (SIADH)
Decreased urine specific gravity may be due to:
- Aldosteronism (very rare)
- Excessive fluid intake
- Diabetes insipidus - central
- Diabetes insipidus - nephrogenic
- Kidney failure
- Renal tubular necrosis
- Severe kidney infection (pyelonephritis)
Additional conditions under which the test may be performed:
- Complicated UTI (pyelonephritis)
- High blood sodium level (hypernatremia)
- Low blood sodium level (hyponatremia)
- Excessive urination
Osmolality is a more specific test for urine concentration. However, the specific gravity measurement is easier and more convenient and usually part of a routine urinalysis. It frequently makes the osmolality measurement unnecessary.
ReferencesLandry DW, Bazari H. Approach to the patient with renal disease. In: Goldman L, Schafer AI, eds. Cecil Medicine. 24th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 116.
Reviewed ByReview Date: 08/21/2011
David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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Which has greater specific gravity 100ml of urine or 100ml of water?
Specific gravity is a characteristic of a substance. The size of the sample is irrelevant. The normal specific gravity of urine in healthy individuals ranges from 1.003 to 1.03 . The specific gravity of pure water is 1.00 .
What is the specific gravity of 50.0ml of urine?
The specific gravity of urine varies from one individual to another. And whatever it happens to be, it doesn't depend on the volume of the sample.
Does the specific gravity of urine ever fall below 1.000?
No
What does specific gravy of 1.015 in urinalysis mean?
Urine specific gravity is a test that measures the chemical components found in the urine. Normal values are between 1.000-1.030. So your specific gravity is considered normal range.
An important characteristc of urine is its specific gravity or density which is?
1.001-1.035
What is the most significant determination of the specific gravity of urine?
Specific gravity is determined by the solutes in the urine - the less solutes, the lower the specific gravity. In normal urine, the solutes are ions such as ammonium.
What does 1.013 specific gravity urine mean?
specific gravity on urine test strip, what does this mean result 1.015
What does the specific gravity (SG) of urine measure?
The density of urine
What reflects the amount of wastes minerals and solids in urine?
Your urine's specific gravity reflects the amount of minerals, solids, and wastes in the urine. Specific gravity is a comparison of urine's density to water's density.
Which has greater specific gravity 100ml of urine or 100ml of water?
Specific gravity is a characteristic of a substance. The size of the sample is irrelevant. The normal specific gravity of urine in healthy individuals ranges from 1.003 to 1.03 . The specific gravity of pure water is 1.00 .
Explain the method of determining the density of urine using urinometer?
A urinometer is a device that determines the specific gravity of urine. It is placed in a urine tube, and where the meniscus of the urine reaches, it is considered its specific gravity.
Does the amount of water you drink each day correspond to the specific gravity of your urine?
The amount of water you drink each day corresponds to the specific gravity of your urine. Specific gravity ranges from 1.001 to 1.035.
What is fullform of USG?
Urine specific gravity
What is the normal specific gravity of dog urine?
For an adequately hydrated dog with normal renal function, urine specific gravity should be over 1.030.
What is the specific gravity of 50.0ml of urine?
The specific gravity of urine varies from one individual to another. And whatever it happens to be, it doesn't depend on the volume of the sample.
What are normal results for urine specific gravity?
The specific gravity can be an excellent source of information on hydration. This is an elevated result indicative of concentrated urine associated with dehydration. A normal specific gravity ranges from 1.010 to 1.020. normal range of S.G. in urine is 1.003 to 1.030.
Does a fever increase or decrease the specific gravity of urine?
fever increases specific gravity of urine because when a person has fever , that person sweats alot which leads to increase in solute concentraion of body and hence more solute will be in urine . therefore making specific gravity of urine higher in person with fever
