Specific gravity , in the context of clinical pathology, is a parameter of urinalysis commonly used in the evaluation of renal function and may aid in the diagnosis of various kidney diseases.
Video Urine specific gravity
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One of the leading roles of kidneys in humans and other mammals is helping to clean up various water-soluble molecules, including toxins, toxins, and metabolic wastes. The body secretes some of these waste molecules through urination, and the role of the kidneys is to concentrate the urine, so that waste molecules can be removed with minimal water and nutrient loss. The concentration of excreted molecules determines the density of the urine. In adult humans, the normal specific gravity values ​​range from 1.010 to 1.030.
Maps Urine specific gravity
Gravity and specific disease
Adults generally have specific gravity in the range 1.010 to 1.030 Increased in specific gravity (hypersthenuria, ie increased concentration of solutes in urine) may be associated with dehydration, diarrhea, emesis, excessive sweating, urinary/bladder infections, glucosuria, renal artery stenosis , hepatorenal syndrome, decreased blood flow to the kidneys (mainly due to heart failure), and excess of antidiuretic hormones caused by inappropriate antidiuretic hormone syndrome. Specific gravity greater than 1,035 is consistent with mild dehydration. In neonates, the normal weight of urine is 1.003. Hypovolemic patients usually have a specific gravity & gt; 1.015.
Weight loss (hyposthenuria, ie decreased urinary solute concentration) may be associated with renal failure, pyelonephritis, diabetes insipidus, acute tubular necrosis, interstitial nephritis, and excessive fluid intake (eg, psychogenic polydipsia).
Osmolality is usually used for more detailed analysis but ultrasound remains popular for its convenience
References
Source of the article : Wikipedia
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