What is fluid or water deprivation and how it’s vital for you to take it? We will explain to you why this medical test is so important. Continue reading to find out more!
Water deprivation test meaning
This test is used to determine if the patient has diabetes insipidus. It’s the condition when the body loses too much fluids through the urination. It causes significant risk of dehydration for the body which can be lethal.
READ ALSO: Kajuru castle Kaduna history
People with diabetes produce the excessive amount of fluid, and it’s results in frequent urination and thirst. Therefore, the interpretation of water deprivation test is necessary for patients. The overall test measures the changes in body weight of the patients and urine output composition. You may also be asked to measure blood levels of ADH for getting the tests more informative.
The time of deprivation is varied from 4 to 18 hours. The urine osmolality is also measured during the test. Let’s take a look at the conditions that can be distinguished during the analysis.
If there is no change in the loss of water, then desmopressin may be administered to get the clear picture of two types of diabetes.
- Normal condition – urine osmolality is more than 800 mOsm/kg (after desmopressin more than 800 mOsm/kg)
- A defect in ADH production condition (neurogenic diabetes) – urine osmolality is less than 300 mOsm/kg (after desmopressin more than 800 mOsm/kg)
- A defect in the kidney’s response condition (nephrogenic diabetes) – urine osmolality is less than 300 mOsm/kg (after desmopressin less than 500 mOsm/kg)
- An excessive intake of fluid condition (polydipsia) - urine osmolality is more than 500 mOsm/kg (after desmopressin more than 500 mOsm/kg)
Therefore, the test for the deprivation of water is significant. It helps to identify diabetes. So do it!
READ ALSO: Meaning of pearls as a gift