urine osmolality and specific gravity lab values

Generally anything under 300 mOsm/kg of water is going to point toward this health condition, but results in the 200 mOsm/kg range is considered a hallmark for diabetes insipidus diagnosis. When fluids are being regularly consumed or forced out of the body because of the action of a diuretic, this can dramatically lower urine osmolality without their being a health issue involved.ĭiabetes insipidus urine osmolality is also typically much lower that the normal averages that are reported in this guide. This may also be achieved with high levels of caffeine intake throughout the day. The most common reason for decreased urine osmolality is an excessive level of fluids being consumed. In general terms, however, here are the conditions that are associated with abnormal urine osmolality. Healthy kidneys can create urine concentrations of up to 1,400 mOsm/kg of water or have a minimum concentration of 40 mOsm/kg of water, so a medical provider must interpret the results based on a patient’s health. In healthy individuals with fluid restrictions, after 12-14 hours, osmolality should exceed 850 mOsm/kg of water.īased on these normal values, the test results reported by a laboratory may be higher or lower than normal. When testing for diabetes insipidus, fluid intake restrictions may also be ordered in conjunction with a urine osmolality test. Once someone reaches the age of 20, the upper level of the normal range will typically decline by 5 mOsm/kg of water per year. The normal range for a laboratory may be between 300-900 mOsm/kg of water.Īge is also a factor. On any random 24 hour test, the urine osmolality for a healthy individual should be between 500-800 mOsm/kg of water. There is a 24 hour collection procedure instituted for a vast majority of urine osmolality tests. What Are Normal Urine Osmolality Results? Test results for diabetes insipidus urine osmolality are typically available within 24 hours, which means completing the process may take 48 hours in total once ordered by a medical provider. This test is used to help diagnose diabetes insipidus, but may also be ordered to assess the hydration status of an individual who may be suffering from the symptoms of dehydration for any unknown reason. It’s often used instead of specific gravity because the results are more accurate when attempting to determine the concentration of a person’s urine. Urine osmolality is a test that is used to measure the amount of dissolved particles that are present in a person’s urine. Is urine usually more dense or less dense than water? Why?. Describe the general procedure for using a “dipstick” to assess a urine sample. What might turbid urine suggest? Please watch this second video about Urinalysis, focusing on the use of a commercially available “dipstick” for chemical analysis of a urine sample, and answer the questions below (Video approximately 16 minutes in duration) 6. What is meant by the turbidity of urine? 5. What medical condition might orange urine suggest? What might be the cause of this? 4. Beets aside, what might red urine suggest? b. Apart from hydration status, what other factors may influence urine color? a. What are the 3 categories of information that can be obtained from a UA? a. What is a urinalysis (UA), and what can it evaluate? 2.

Name: _ Community College of Philadelphia Biology 110: Anatomy and Physiology II Urinary Physiology (Unit 30) Please watch this video about Urinalysis, focusing on gross examination of the sample, and answer the questions below (Video approximately 6 minutes in duration).

Urine osmolality and specific gravity lab values