Question

Once you have calculated the concentration of each sample think about which ample may apply to which of the follo subjects Consider the following: This test is mainly used to see the protein balance and the amount of dietary protein needed by severely ill patients Urime un serves this purpose as it is a measure of protein break down in the body. Urea is excreted by the kidneys, so excretion of uren can reflect kidney function. The urine vrea excretion can be measured to obtain a ratio between the plasma (blood) ures and the urine urea. This ratio (U/Purea) is an indicator of how well the kidneys are able to filter and excrete urea from the bloodstream Normal values range from 6 to 17 gm 24 hours or (60 to 90 mg/dl). Normal value ranges may vary slightly among different laboratories Note: gm 24 hours - grams per 24 hours, mg/dl - milligrams per deciliter What do abnormal results mean? Low levels usually indicate Malnutrition (inadequate protein in diet. Kidney dysfunction, Increased reabsorption High levels usually indicate: Excessive protein intake, Increased protein becakdown in the body Complete the table and give your reasons below Sample A-144 g/day Sample B 24.8 g/day Sample : 172 g/day Subject A Description 24h urine vel Subject weight kg Which Sample? Healthy vegetarian subject consuming 35g dietary 2000 ml proteis per day Obese subject undergoing therapeutic fast 24 h 2000 ml urine sample from day 5 of last Healthy football player, consuming 75 protein 2000 ml per day Subject B Subject

Answer 1

Subject A - sample C .As he is taking vegetables,he will get adequate amount of protein from the diet he is consuming . So he is excreting 17.2 g/day , as urea produced by him fall into normal range. The protein he is getting is just adequate, note this is not excess.

Subject B - sample A. Because with fasting, by 5th day, available protein also start utilising for the production of energy. As urea production and protein present in the body are dependent, this subject will have low urea production - 14.4g/day.

Subject C - sample B. The given subject is a sportsman. Sportsman's intake high protein diets for the production of excess energy.. Hence those subjects will have higher urea concentration due to excess protein intake. Hence sample B - 24.8g/day.