Canine diabetes insipidus can be idiopathic in nature or caused by congenital defects. When target cells in the kidney lack the biochemical machinery necessary to respond to the secretion of normal or increased circulating levels of ADH, nephrogenic diabetes insipidus results. Specific substances in the urine will also cause higher urine specific gravity results. Anything above 1.010 may indicate that there is mild dehydration present, while higher numbers indicate that more severe dehydration is taking place.
Once a urine sample is provided, this test can be performed right away. Certain contrast dyes can also negatively affect test results. © 2020 Merck Sharp & Dohme Corp., a subsidiary of Merck & Co., Inc., Kenilworth, NJ, USA)
In doing so, you can take charge of your health and make sure diabetes insipidus doesn’t have an ongoing control over you. This method is more reliable than the dipstick testing and is the most common form of determining a person’s diabetes insipidus urine specific gravity.
Central diabetes insipidus can also be caused by trauma to the brain or a tumor in the brain or pituitary gland.
Diarrhea can also cause this result if fluids are not being consumed. Diagnosis is based on finding chronic polyuria that does not respond to dehydration and is not a result of chronic renal disease, followed by an ADH response test. It is not uncommon for individuals with an inflammatory bowel condition to have high abnormal results, but be experiencing symptoms that are somewhat similar to diabetes insipidus. Urine specific gravity is a laboratory test, ordered by a medical provider, which shows the concentration levels of all chemical particles that happen to be in the urine. A more advanced test involves calculating normal daily water intake, measuring how much the dog is truly drinking in 24 hours, depriving him of a portion of the volume he is consuming (closer to the normal volume), and then measuring the urine concentration to assess whether or not the urine can be concentrated. These test results, along with other tests that may be ordered, will be compared with one another for a complete picture of a person’s current health. Diabetes insipidus also needs to be distinguished from other diseases with polyuria. This means any results which are closer to 1.000 mean that there are fewer contaminants in the urine and that the body is functioning with normalcy.Most laboratories interpret the range for urine specific gravity as being 1.002-1.030. The Manual was first published in 1899 as a service to the community. View All News >
Even after a period of strenuous exercise, a healthy person would likely wind up with this test result, especially if they were not consuming fluids while working out. Related content. Last full review/revision Jul 2019 | Content last modified Aug 2019
The most common are diabetes mellitus with glycosuria and high urine specific gravity, and chronic nephritis with a urine specific gravity that is usually low and shows evidence of renal failure (protein, casts, etc). When there is a decreased level of urine specific gravity, then this can be a strong indication that diabetes insipidus is present. Diabetes insipidus is caused by a lack of antidiuretic hormone (ADH) or an inability of the kidneys to respond to ADH. Isosthenuria (USG of 1.008-1.012) indicates that the urine has been neither diluted nor concentrated by the kidneys. Most people will never have a result above 1.035. Learn more about our commitment to The trusted provider of veterinary information since 1955
Polyuria may be controlled using
This would indicate that a patient’s kidneys were functioning at a normal level.Low urine specific gravity results are typically 1.001-1.003. Cushing Disease (Pituitary-dependent Hyperadrenocorticism) in AnimalsHypertrichosis Associated with Adenomas of the Pars IntermediaWhich of the following serum biochemical abnormalities is most likely to occur in a dog with primary hypothyroidism? The urine concentration (specific gravity) is quite low in these dogs.
Wide fluctuations in urine specific gravity have not been reported in healthy cats. Discuss treatment plan options, lifestyle changes, and other options that may be available to help control these symptoms. The increase of urine osmolality above that of plasma in response to exogenous ADH in the hypophyseal form, but not in the nephrogenic form, is useful in the clinical differentiation of the two forms of the disease.The posterior lobe, infundibular stalk, and hypothalamus are compressed or disrupted by neoplastic cells.
SIADH may also be a possibility of the urine specific gravity test is abnormally high.The urine specific gravity test on its own does not provide most medical providers with enough information to make a definitive diagnosis of diabetes insipidus. Animals: 20 dogs with CDI. The legacy of this great resource continues as the Merck Manual in the US and Canada and the MSD Manual in the remainder of the world. If no evidence of an underlying condition can be found, the veterinarian may want to perform a urine specific gravity test.
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