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How do I interpret a urine specific gravity reading on a refractometer and hydrometer?

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A 35-year-old man (height 67 inches, weight 73.3 kg) with known chronic renal disease for 6 months has blood drawn for serum creatinine and urea tests. Urine is collected for a 24-hour quantitative creatinine test; the total volume of urine collected is 1139 mL. The following laboratory results are obtained for the testing done: Urine creatinine: 56 mg/dL Serum creatinine: 9.6 mg/dL Serum urea: 75 mg/dL Questions 1. What does an elevated serum blood urea nitrogen (BUN) suggest? 2. What does an elevated creatinine suggest? 3. What is the clinical significance of the GFR and the urea nitrogen/creatinine ratio?
Determination of Creatinine in Serum and Urine Experiment; Question: Why are using this materials/chemicals in this experiment? *10% sodium tungstate *0.75 M NaOH Creatinine depot standard *0.67 N H2SO4 *Picric acid (0.04 M) Procedure: 3 mL of water, 1 mL of 10% sodium tungstate, 2 mL of 0.67 N H2SO4 are added onto the serum (2 mL), mixed well, and filtered after 5-10 minutes (protein-free serum filtrate). 3 mL of this filtrate is used for the test.All tubes are mixed, incubated at room temperature for 20 minutes and read against the reagent blank at 520 nm.First, the serum volume in the test tube is calculated.Since working with 3 mL standard, the absorbance of the standard tube belongs to 30 µg creatinine.
What is the patient's creatinine clearance given the following data? Serum creatinine 0.6 mg/dL Urine creatinine 102 mg/dL 24 hr urine volume 1650 mL Patient's BSA 1.93 m2 1) 195 mL/min 2) 130 mg/dL 3) 93 mL/min 4) 175 mL/min no references, just homework
How are CFU (colony forming units) calculated in urine? (Hint/comment: what is the volume in urine cultures)
A patient receives an intravenous (IV) solution that flows at the rate of 150 mL per hour. How much fluid does the patient receive in 20. min? (Answer = 50 mL) How long does it take for the patient to receive 90. mL of fluid? (Ans. = 0.6 hr or 36 min.) If the IV bag holds 600. mL of fluid, how many minutes does it take to empty the bag? (t = 4 hrs) If the solution contains 90. mg of glucose per mL, how long will it take to give the patient 2.0 g of glucose? (t = 0.15 hr or 9 min)
A urinalysis is a test that examines physical, chemical and microscopic aspects of urine. Examining urinary fluid can reveal much about the functioning of the body, as changes from the normal characteristics or appearance may reflect specific diseases. Currently, commercially-available chemical reagent sticks can be used to detect substances in urine. Of the following, which are substances that reagent sticks can test for? a. Substances produced by the body, and naturally found in urine. b. Substances produced by the body, but not usually present in urine. c. Substances not normally found in the body. d. a. and c. only e. a., b., and c.
Using Table 1 and Table 2 of the prelab, determine which disease, if any, may be indicated by the urine test results from Unknown A and Unknown B and why. Explain in your own words. See attacched tables need it .
A creatinine clearance is done on a patient with the following results: serum creatinine, 0.6 mg/dL; urine creatinine, 102 mg/dL; urine volume, 1650 mL/24 hours; body surface area, 1.93 m2. Based on the information from calculations above, which of the following is the best interpretation of this patient's creatinine clearance results? 1) Within the normal range 2) Above normal, probably because the 24-hr urine collection was not completed correctly 3) Above normal 4) Below normal no references, just homework