Two 0.9 mL aliquots of a serum are placed in two separate test tubes. These two test tubes are labeled as A and B. To tube-A, 0.1 mL of water is added. To tube-B, 0.1 mL of 200 mg/dL urea is added. Both specimens (A ad B) are analyzed for their urea concentration, and obtained following results. Tube-A= 24 mg/dL Tube-B= 43 mg/dL What is the percent recovery of this experiment? 75% 95% 58% 90%

Two 0.9 mL aliquots of a serum are placed in two separate test tubes. These two test tubes are labeled as A and B. To tube-A, 0.1 mL of water is added. To tube-B, 0.1 mL of 200 mg/dL urea is added. Both specimens (A ad B) are analyzed for their urea concentration, and obtained following results. Tube-A= 24 mg/dL Tube-B= 43 mg/dL What is the percent recovery of this experiment? 75% 95% 58% 90%

Principles Of Pharmacology Med Assist

6th Edition

ISBN:9781337512442

Author:RICE

Publisher:RICE

Chapter12: Parenteral Equipment And Supplies

Section: Chapter Questions

Problem 15RQ

See similar textbooks

Similar questions

If the highest dilution with a color change in an ELISA test is 1:64, the antibody titer is 640. true false
A.How much of 10,000x SYBR safe would you add to 50 ml to make a final concentration of 1x? B.How will you set up the serial dilution? How many tubes do you need? What is the concentration in each? How much LB will you add to each tube? What volume of cells will you add?
At the station there is a 2 mL microcentrifuge tube containing sheep blood and 3 tubes containing the following solutions: 0 mM, 300 mM, 600 mM of sucrose. The tubes are randomly labelled A, B, C. 2 mL of each solution were transferred to a different microcentrifuge tube, 20 ul of blood were then added to each tube, and they were mixed well by inverting the tube for multiple times. They were observed and it was determined whether the solution in each tube was hypotonic (Yes or No) relative to the blood cells. In addition, the solutions were diluted with water to help you determine which solution is which sucrose concentration. What sucrose concentration corresponds with each tube? Tube Hypotonic (Yes/No) Hypotonic after 1:1 dilution with water (Yes/No) Most likely Sucrose concentration (mM) A No Yes B Yes Yes C No No
Order: streptomycin 500 mg IM daily for 8 days. If you have vials of this antibiotic that are labeled as 1 g/2.5 mL, how many milliliters would you administer?
A thyroid peroxidase antibody test was performed on a 45 year old man. The dilution sequence was 25 microliters serum to 100 microliters of diluent in tube 1. Then 25 microliters from tube 1 was added to 25 microliters of diluent in tube 2. Then 25 microliters from tube 2 was added to 50 microliters of diluent in tube 3. A.What is the dilution factor of tube 1? B. What is the dilution factor in just tube 2? C.What is the dilution factor in just tube 3? D.What is the overall dilution factor in tube 3?(leave answer as fraction)
You have a 1:5 dilution. Describe how you would make a 1:100 dilution. When 0.5 µL of serum is added to 1.0 µL of diluent, what is the dilution? What is the dilution factor needed to change a 1:2 dilution to a 1:10?
The order is to give 45 mEq. The dosage available is 30 mEq in 15 mL. How many mL do you give?
Serial dilutions are made in order to determine the level of the antibody in the sample. True or False ?
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?
Give the positive result for the test of purines.
A thyroid peroxidase antibody test was performed on a 45 year old man. The dilution sequence was 25 microliters serum to 100 microliters of diluent in tube 1. Then 25 microliters from tube 1 was added to 25 microliters of diluent in tube 2. Then 25 microliters from tube 2 was added to 50 microliters of diluent in tube 3. What is the dilution factor of tube 1. What is the dilution factor in just tube 2. What is the dilution factor in just tube 3. What is the overall dilution factor in tube 3.
Given the following serological pipets: A. 10 mL – Increment is 1/10 B. 5 mL – Increment is 1/10 C. 2 mL – Increment is 1/100 D. 1 mL – Increment is 1/100 E. 0.2 mL – Increment is 1/100 F. 0.1 mL – Increment is 1/100 ***Increment is the no. of division of the graduation lines, so if it is 1/10, the value of each line on the pipet is 0.1 Which of the above pipets is appropriate or best to use for the measurement of the following volumes: (Choose only the letters, you may use more than one pipet if it is necessary) 1. 0.82 mL 2. 6.35 mL 3. 1.04 mL 4. 0.02 mL 5. 0.15 mL 6. 0.50 mL 7. 9.5 mL 8. 1.25 mL 9. 2.86 mL 10. 3.7 mL