The following instructions are needed for collecting the urine sample for reagent testing are
What instructions will you give Ken in collecting the urine sample for reagent testing?
The urine sample containing phosphate was treated with molybdenum blue reagent to produce a species absorbing at 820 nm with an absorbance of 0.428. Then 1.00 mL of a 5.00 g/L phosphate standard was added to 104.0 mL of the urine sample. The spiked urine sample gave an absorbance of 0.517. Find the original concentration of phosphate in g/L in the urine sample. Correct sigfigs!
If a urine sample for C+S can not be delivered to the lab immediately for testing; all of the following would be acceptable EXCEPT: A. place the specimen in a tube containing preservative B. store the sample in the refrigerator C. collect the sample in a sterile container and transfer it to a grey top urine vacutainer D. ask the patient to return later to submit a new sample
A 2.00-mL urine sample was treated with molybdenum blue reagent to produce a species absorbing at 820nm, after which the sample was diluted to 100mL. A 25.00mL aliquot of this solution gave an absorbance of 0.428. Addition of 1.00 mL of a standard solution containing 0.0500 mg/mL of phosphate to a second 25.00-mL aliquot gave an absorbance of 0.517. Use these data to calculate the concentration of phosphate in milligrams per milliliter of the original urine sample.
5: PREGNANCY TEST PROCEDURE Chapter 11: Special Collections and Point-of-Care Testing SKILLS DRILL Instructions: Man 221 ch the rationale with the corresponding step in the procedure. Rationale Procedure Step Identify the patient according to facility policy. Label the specimen cup with the patient's label. Obtain the patient's urine specimen. Remove the test device from the protective pouch and place it on a flat surface. Using the disposable dropper provided, add 3 drops of sample to the cassette well. Set a...
comment on the use of oxidation test (cro3) as a testing reagent. what functional group(s) react readily with oxidation test (cro3) and what is the visual outcome of a positive test? draw a sample reaction to support your answer (arrow pushing mechanism is not necessary).
A patient brought a urine specimen to the clinic for hCG testing. She reported that she has performed a home pregnancy test earlier that day on this same specimen and the results were negative, even though she felt sure that she was pregnant. The technician resulted the specific gravity of the urine and found it to be 1.007. Is the patient pregnant? What advice should be given the patient? Do you believe she had a false negative hCG? Why or...
Testing and Screening Ken had just turned 40, and with a little encouragement from his wife, he decided that it was time to have a physical-it would be his first real visit to a doctor since he broke his arm as a kid. Seeing a doctor had not made sense to him before. He was in great shape, felt fine, and did not smoke. Maybe it was his 65-year-old father's sudden death from a heart attack just a few weeks...
3. What is the purpose of testing water in the reaction with Seliwanoff's reagent and with the 10- dine solution? 4. A solution in the lab was known to be either glucose or fructose. Which test could be used to correctly identify the solution?
What is hypothesis testing? How would you explain it to someone who has not had as much statistical experience as you? What is the difference between the null and alternate hypotheses? What does the p-value tell you? When do you reject the null hypothesis or fail to reject the null hypothesis? Explain how collecting data (i.e. convenience sampling, randomly selected sample, etc.) for the samples could impact the ability to generalize your results to the whole population.
4. A test for drug use involves addition of 10.00 mL of colorless reagent to 10.00 mL urine. If drug residue is present in the sample the solution turns blue ( 605 nm, <= 18,200 M-'cm'). Because other things in urine may give slightly positive results only tests that measure a minimum concentration of 5.0x10° drug residue in the original urine sample are considered positive for illegal drugs. When you measure the sample using the test described above and get...