For a simple routine qualitative analysis, why is an early morning sample of urine used for the tests, and not a sample collected after a meal? Explain briefly.
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For a simple routine qualitative analysis, why is an early morning sample of urine used for the tests, and not a sample collected after a meal? Explain briefly.
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- For a simple routine qualitative analysis, why is an early morning sample of urine used for the tests, and not a sample collected after a meal?What level of RF in serum is clinically significant? Why is a 1:20 dilution of patient serum, rather than undiluted patient serum, used for the qualitative test? Describe how the RF concentration is computed?Why is a 1:20 dilution of patient serum, rather than undiluted patient serum, used for the qualitative test?
- What is the purpose of the RPR (RAPID PLASMA REAGIN ) Test? Why is a qualitative test performed before a semi-quantitative test? Why is it necessary to rotate the slide/card?Discuss the correct laboratory technique in using the centrifuge for qualitative analysis. Give two tips on its proper use. Explain how calcium ions are confirmed present in a solid salt by using flame test. Discuss a method to confirm the presence of a) phenol and b) ketone in a test compound. How are proteins confirmed present in a sample? Explain the laboratory process.What is the difference between cost per billable test and cost per reportable result. (Give examples referring from the laboratory environment)
- Answer the following questions (not more than 5 sentences/question). Discuss the correct laboratory technique in using the centrifuge for qualitative analysis. Give two tips on its proper use. Explain how calcium ions are confirmed present in a solid salt by using flame test. Discuss a method to confirm the presence of a) phenol and b) ketone in a test compound. How are proteins confirmed present in a sample? Explain the laboratory process.What are the reasons (give three) why blood samples might be rejected in the pre-analytical phase.The following are errors that people commonly make when they perform serial dilutions. Indicate whether you think that the number of cfu/ ml calculated would be too high or too low if you make this mistake. You intend to add 0.9 ml of diluent to each tube and 0.1 ml of culture. Instead, you add 0.5 ml of diluent to each tube and 0.1 ml of culture to the first tube. Then, you make a serial dilution of 0.1 ml into and from each tube as described. You prepare 0.9 ml of diluents in each tube. You add 0.1 ml of culture (from the overnight culture provided) to every tube. You add 0.9 ml of diluent to each tube. You add 0.1 ml of culture to the first tube and mix. You get distracted, and transfer 0.1 ml to the third tube instead of the second. You perform the rest of the series as described.
- Describe the proper technique for performing reagent strip testing for urine.make the test principle, materials required for the analysis, sample preparation, test procedure, indication of a positive result, complications/interferences, for nitrous acid test.A nurse reconstituted a vial of 750 mg Cefuroxime Sodium Powder for Injection with 6mL of sterile water for injection. The reconstituted solution was dark amber-colored solution. The package insert states that solution colors range from clear to yellow depending on concentration, diluent, and storage conditions. The nurse was then hesitant to give the patient the solution due to its unusual dark color. Five portions were taken from a batch of cefuroxime sodium. Prior to testing in the instrument, each part was subjected to one of the following conditions: Conditions Specifications Temperature Portion 1: 8°C ± 2°C Portion 2: 30°C ± 2°C Portion 3: 40°C ± 2°C Light Portion 4: Kept in the dark Portion 5: Exposed to direct sunlight 1. Which form of the product – the powder for injection, the reconstituted product, or both – will you subject to the following conditions? Why do you think these forms can best address the problem?