urine specific gravity

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Related to urine specific gravity: urine osmolality

urine specific gravity

a measure of the degree of concentration of a sample of urine. The normal range of urine specific gravity is 1.003 to 1.035, depending on the patient's previous fluid intake, renal perfusion, and renal function.

u·rine spe·cif·ic grav·i·ty

(yūr'in spĕ-sif'ik grav'i-tē)
The density of urine compared with the density of water.


the fluid containing water and waste products which are secreted by the kidneys, stored in the bladder and discharged by way of the urethra. See also urinary.

urine albumin
urine alkalinization
increasing the pH of urine by the administration of alkalinizing agents such as sodium bicarbonate; used to increase the solubility of cystine in the management of cystine urolithiasis in dogs.
blood in urine
urine burn
see urine scald (below).
urine calculi
urine casts
see urinary casts.
urine cells
see urine sediment (below).
urine chromogens
urine concentration test
see water deprivation test.
urine creatine
urine crystals
urine drinking
in farm animals is observed in nutritional deficiency of sodium chloride.
urine flow
the rate of flow may be reduced—oliguria, absent—anuria, or increased—polyuria.
urine flowmetry
measure of urine flow rates.
urine glucose
urine hemoglobin
urine immunoglobulins
may be found in small amounts in normal animals. Increased amounts occur in renal disease due to disruption of glomeruli and defects in tubular reabsorption.
urine indican
urine ketones
urine marking
metastable urine
calcium oxalate crystals are maintained and can enlarge in urine oversaturated with these minerals.
urine methemoglobin
urine myoglobin
urine osmolality
a measure of the number of dissolved particles per unit of water in urine. See also osmolality.
oversaturated urine
calcium and oxalate crystals will spontaneously precipitate, grow and aggregate.
urine peritonitis
caused by the presence of urine in the peritoneal cavity as in rupture of the bladder.
urine pH
the normal range varies with the animal species. Herbivores have a higher pH than carnivores because of differences in the diet. Alterations occur with changes in acid-base balance and infection in the urinary tract.
urine protein
pus in urine
see pyuria.
red urine
residual urine
urine remaining in the bladder after urination; seen in bladder outlet obstruction (as by prostatic hypertrophy) and disorders affecting nerves controlling bladder function.
urine sample collection
midstream collection is standard; for culture the sample should be collected by catheter or suprapubic, percutaneous needle insertion into the bladder.
urine scald
scalding of the perineal area, and sometimes the hindlegs, by urine. It may be the result of urinary incontinence or the animal's inability to assume normal posture when urinating, i.e. paresis or paralysis of the hindlimbs. In rabbits it is caused by poor cage accommodation and frequent wetting of the area with urine. Secondary infection of the dermatitis is common.
urine sediment
a centrifuged deposit suitable for microscopic examination for the presence of cells, casts, bacteria, crystals, etc.
urine specific gravity
see specific gravity.
subcutaneous urine aggregation
urine leaking from a damaged urethra collects in a subcutaneous site.
References in periodicals archive ?
Urinalysis examination revealed significant derangements in urine specific gravity on days 2, 6, 8, 10 and 12.
2006) Consistently high urine specific gravity in adolescent American football players and the impact of an acute drinking strategy.
020 (34) the mean values of urine specific gravity in the current study suggest that the participants were dehydrated before the trials (urine specific gravity > 1.
Detecting dehydration with biochemical assessment has shown that that an increase in the blood urea nitrogen and creatinine ratio (BUN: creatinine) was relative to a higher urine specific gravity so may be used in diagnosis of dehydration (Bennett, Thomas, & Riegel, 2004).
Initially, an hourly assessment of intake and output data as well as urine specific gravity may be necessary.
IRIS has transferred the manufacturing and distribution of its UroStat digital refractometer for urine specific gravity measurement and its recently acquired Cen-Slide urinalysis sediment preparation and manual microscopy system to StatSpin facilities in Norwood, Mass.
2012), urine specific gravity (USG) was used to quantify hydration status pre- and post-training/competition, but neither study measured USG from first-morning urine samples.
Cats were deemed healthy based on physical examination and laboratory tests: hemogram, serum levels of alanine aminotransferase (ALT), alkaline phosphatase (AP), urea (U) and creatinine (Cr), urinary concentrations of Cr, gamma-glutamyltransferase (GGT), total proteinand albumin, urine specific gravity, fractional excretion of sodium (FENa), and tests for feline immunodeficiency virus (FIV) and of feline leukemia virus (FeLV).
Normalization based on the relationship of urine cotinine to creatinine or urine specific gravity in a population not exposed to cigarette smoke was reported to enhance the correlation to clinical endpoints in passively exposed infants (13).
Patients with low urine specific gravity (less than 1.