Collection and preservation of urine

Question 1

Match the type of urine collection with its most appropriate use:
A. Catheterization
B. Clean-catch
C. Early afternoon
D. First morning
E. Postprandial
F. Random
G. Suprapubic aspiration
H. Three-glass
I. Timed
J. 24-hour

1. ___ diabetic screening
2. ___ diagnosis of prostate infections
3. ___ insertion of a needle directly into the bladder
4. ___ insertion of tubing through the urethra into the bladder
5. ___ most concentrated specimen
6. ___ routine analysis
7. ___ screening for infection
8. ___ substance quantitation
9. ___ substances showing diurnal variation
10. ___ urobilinogen quantitation

Answer 1

1. _E. Postprandial__ diabetic screening
2. __H. Three-glass _ diagnosis of prostate infections
3. _G. Suprapubic aspiration __ insertion of a needle directly into the bladder
4. _A. Catheterization __ insertion of tubing through the urethra into the
   bladder
5. _D. First morning __ most concentrated specimen
6. _F. Random __ routine analysis
7. __B. Clean-catch _ screening for infection
8. __J. 24-hour_ substance quantitation
9. _I. Timed __ substances showing diurnal variation
10. __C. Early afternoon _ urobilinogen quantitation

Question 2

Match urine preservatives with their description:
A. Boric acid
B. Chloroform
C. Chlorhexidine
D. Formalin
E. Refrigeration
F. Thymol

11. ___ rarely used preservative
12. ___ may precipitate protein
13. ___ inhibits bacterial growth
14. ___ culture and sensitivity
15. ___ routine analysis within 72 hours
16. ___ adequate for a short time

Answer 2

11. _F. Thymol __ rarely used preservative
12. __D. Formalin _ may precipitate protein
13. __B. Chloroform_ inhibits bacterial growth
14. __A. Boric acid _ culture and sensitivity
15. __C. Chlorhexidine _ routine analysis within 72 hours
16. __E. Refrigeration _ adequate for a short time

Question 3

17. What method of collection is best used for urine collection from infants?
    a. Catheterization
    b. Clean-catch into a sterile urine cup
    c. Collection into bedpan
    d. Collection into a U-bag

Answer 3

d. Collection into a U-bag

Question 4

18. What is the best method for testing urine that is delivered in a sterile cup?

a. Perform urine screening tests directly in the sterile
container.
b. Pour off the urine into a urine preservative or testing tube.
c. Use a pipet to transfer urine into a preservative or
testing tube.
d. Use a sterile aspiration device or cap port to transfer urine into a urine preservative tube.

Answer 4

d. Use a sterile aspiration device or cap port to transfer urine into a urine preservative tube.

Question 5

Which specimen is the best to use for diabetes screening?
a. Random
b. First morning
c. Postprandial
d. 24-hour collection

Answer 5

c. Postprandial

Question 6

Explain the use of the urine testing tubes in this image.

Answer 6

20. Specimens for molecular testing for STDs.
21. Specimens for urine culture
22. Tests requiring nonpreserved specimens
23. Chemical screening tests for up to 72 hours