Urinary System Lab Activity: Urinalysis Background Urinalysis, the physical, che

Question

Urinary System Lab Activity: Urinalysis Background Urinalysis, the physical, chemical, and microscopic analysis or examination of urine can provide information about a person's carbohydrate metabolism (diabetes), kidney and liver function, acid-base balance, and urinary tract infections. Different measurements including specific gravity, pH, and the concentrations of several different components of urine are used in the diagnosis of different diseases. Some of the substances measured, such as protein or glucose, are rarely if ever present at detectable levels in the urine of a healthy person. Other parameters, such as specific gravity (a measure of total solutes...distilled water has a specific gravity 1) and pH, fluctuate over a wide range depending on diet, health status, and fluid intake. The table below presents expected normal urinalysis test values and explains the significance of each parameter measured. Note: The only parameters that are included in the chart are those used in today's lab. Expected range I Significance ef pesitive test fer atmormal rangd) light to dark yellow nedeess due to blood from glomerular ary infections transparent, not cloudy (not turbid) / possable infection nesence f eakocytes slightly aromatic, but not fruity or like acetone, no ammonia /ketosis, possible negative possible diabetes mellites negativel inflammariominjury of wrogenital tract or lidneysmenstral contaminarion 6-8.0, normal or abnormall/continuously very acidlic wrine may indicate acidosis continuonsly very alkaline arine may indicate alialosis or microial infection to advanced diabetes melline Unfortunately, there was a mix-up at a nearby laboratory. Due to a back-up of samples at the lab that need to be re-tested, your class was selected to confirm the results that they obtained. You will be provided with five different urine samples and the results of your class's controlled tests. You will analyze those results and match them to the correct patients. Tests Performed 1) pH paper color changes from orange depending on pH, key is on the side of package 2) Benedict's solution turns from blue to orange (when heated), if glucose is present 3) Biuret reagent-turns from dark blue to pink/purple if protein is present DO NOT HEATRELEASES TOXIC FUMES! 4) Silver nitrate forms a white precipitate in the presence of excess chloride ions 5) Urine color-don't forget to observe the color and clarity of the sample Patient Descriptions

Explanation / Answer

13) The chemical content of urine changes through out the day because of what we consume.if we stay hydrated our urine will reflect by its colour.

Any thing that can pass through cappillaries of kidneys will wind up in urine

example-

14) The Doctor cannot rely on the urine test alone for confirmation of diabetis in a patient.He has to go for the specific tests of blood like GTT( Glucose tolerence test) for accurate diagnosis.

In the past urine test alone was taken as specific test but now its no more considered as accurate test. A large amount of glucose in urine is a sign of potential diabetes.

Patient name Sample Disease/Disorder Test results Mr.Jones 1 Diabetes mellitus Benedicts -positive test Mr.Thompson 2 Chronic kidney failure ph test and colour of urine Mr.Niguchi 3 Addisions disease Silver nitrate and ph test Mrs.Martinez 4 Healthy patient Clear clour of urine and ph of urine Ms.Smith 5 Urinary track infection Silver nitrate test positve

Related Questions

Navigate

• Browse (All)
• Browse U
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.