S1 [LAB]: URINE SPECIMEN COLLECTION

Question 1

Capacity of urinalysis containers

Answer 1

50 mL

Question 2

Required volume of urine

Answer 2

more than or equal to 12 mL

Question 3

Tube used for physical examination of urine

Answer 3

Conical tube or Wasserman tube

Question 4

Maximum waiting time for a fresh urine sample

Answer 4

2 hours

Question 5

Effect of oxidation or reduction of metabolites in unpreserved urine

Answer 5

Modified/ darkened color

Question 6

Effect of bacterial growth and precipitation of amorphous material in unpreserved urine

Answer 6

Decreased clarity

Question 7

Effect of multiplication of bacteria or bacterial breakdown of urea to ammonia in unpreserved urine

Answer 7

Increased odor

Question 8

Effect of glycolysis and bacterial utilization in unpreserved urine

Answer 8

Decreased glucose

Question 9

Effect of volatilization and bacterial metabolism in unpreserved urine

Answer 9

Decreased ketones

Question 10

Effect of exposure to light oxidation in unpreserved urine

Answer 10

Decreased bilirubin

Question 11

Effect of disintegration in dilute alkaline urine in unpreserved urine

Answer 11

Decreased blood cells and casts

Question 12

The refrigeration of urine samples causes precipitation of ___

Answer 12

amorphous crystals

Question 13

T/F: Refrigerated urine samples must return back to room temperature first before testing

Answer 13

T

Question 14

T/F: Bactericidal preservatives are preferred as they inhibit urease and preserves formed elements in urine samples

Answer 14

T

Question 15

Type of urine specimen:

Most common type recevied

Answer 15

Random specimen

Question 16

Type of urine specimen:

Routine screening for obvious abnormalities

Answer 16

Random specimen

Question 17

Type of urine specimen:

May be collected any time

Answer 17

Random specimen

Question 18

Type of urine specimen:

Dietary intake and activity may alter results

Answer 18

Random specimen

Question 19

T/F: In random urine specimen, patients may have to collect a follow-up specimen

Answer 19

T

Question 20

Type of urine specimen:

Ideal screening specimen

Answer 20

First morning specimen

Question 21

Type of urine specimen:

More concentrated than a random specimen

Answer 21

First morning specimen

Question 22

In first morning specimen, the patient is in ___ state

Answer 22

Basal

Question 23

Type of urine specimen:

Used for orthostatic protein confirmation and urine pregnancy tests

Answer 23

First morning specimen

Question 24

Type of urine specimen:

Preferred in pregnancy tests and avoids false negatives

Answer 24

First morning specimen

Question 25

Type of urine specimen: For glucose monitoring in diabetes patients

Answer 25

Fasting specimen

Question 26

Type of urine specimen: Actually is second specimen voided - collected after the first morning specimen

Answer 26

Fasting specimen

Question 27

Type of urine specimen: Monitors insulin therapy

Answer 27

2-hour postprandial specimen

Question 28

Type of urine specimen: Results can be compared with fasting urine specimen and blood test results

Answer 28

2-hour postprandial specimen

Question 29

Type of urine specimen: Institutional option for collection with blood glucose tolerance test - not frequently done

Answer 29

Glucose tolerance specimen

Question 30

T/F: The glucose tolerance specimens are collected at the same intervals as the blood samples

Answer 30

T

Question 31

Type of urine specimen: Used to correlate renal threshold with patient's ability to metabolize glucose

Answer 31

Glucose tolerance specimen

Question 32

Type of urine specimen: Required for quantitative results

Answer 32

24-hour (timed) specimen

Question 33

Type of urine specimen: Needed for measuring substances with diurnal variation and substances that vary with meals, activity, and body metabolism

Answer 33

24-hour (timed) specimen

Question 34

Most common tests where catheterized specimens are used

Answer 34

Culture and sensitivity

Question 35

Type of urine specimen: Alternative to catheterized specimen

Answer 35

Midstream clean-catch specimen

Question 36

Type of urine specimen: Less contaminated than routine collection

Answer 36

Midstream clean-catch specimen

Question 37

Type of urine specimen: Completely free of contamination for culture and cytology

Answer 37

Suprapubic aspiration

Question 38

Type of urine specimen: Also called the 3-glass collection

Answer 38

Prostatitis specimen

Question 39

The first container in the 3-glass collection contains ___

Answer 39

first urine passed

Question 40

The second container in the 3-glass collection contains ___

Answer 40

midstream urine

Question 41

The third container in the 3-glass collection contains ___

Answer 41

remaining urine and prostatic fluid

Question 42

Which container is used in quantitative cultures in the 3-glass collection?

Answer 42

All 3 specimens

Question 43

Which container is used in microscopic WBC examination in the 3-glass collection?

Answer 43

1 and 3

Question 44

Which container is used as a control for bladder or kidney infection in the 3-glass collection?

Answer 44

2

Question 45

T/F: Positive culture in specimen 2 invalidates positive culture in specimen 3

Answer 45

T

Question 46

Type of urine specimen: Soft, clear plastic bags, with hypoallergenic tape applied to genital area

Answer 46

Pediatric specimens

Question 47

Optimal temperature for urine preservation

Answer 47

2-8C

Question 48

The yellow pigment in the urine is the ___

Answer 48

Urochrome

Question 49

Aside from urochrome, other urine pigments such as ___ and ___ (pink) also contribute to urine color formation

Answer 49

Urobilin Uroerythrin

Question 50

Refers to the transparency and turbidity of a urine specimen

Answer 50

Clarity

Question 51

The density of a solution compared with the density of a similar volume of distilled water at a similar temperature

Answer 51

Specific gravity

Question 52

Measurement of specific gravity is used in the evaluation of ___

Answer 52

renal tubular function

Question 53

Normal specific gravity of a normal random urine specimen

Answer 53

1.002 - 1.035

Question 54

A specific gravity of ___ can indicate that it is not urine

Answer 54

<1.002

Question 55

T/F: Urine volume is usually not taken into account in urinalysis unless required by the physician

Answer 55

T

Question 56

T/F: Urine first undergoes routine examination before culturing

Answer 56

F

Question 57

In pediatric specimens, bags with tubes to a larger container are available for ___ specimens

Answer 57

timed

Question 58

Documentation from the time of specimen collection until the time of receipt of laboratory results; standardized form always accompanies specimen

Answer 58

Chain of custody

Question 59

In drug specimen collection, temperature should be taken within ___ minutes and must be at ___C

Answer 59

4 mins 32.5-37.7C

Question 60

The most routinely used method of preservation

Answer 60

Refrigeration at 2-8C

Question 61

If the urine is to be cultured, it should be refrigerated during transit and kept refrigerated until cultured up to ___

Answer 61

24 hours

Question 62

Catheterized specimen is most commonly requested in what test?

Answer 62

Bacterial culture

Question 63

In prostatic infection, the third specimen in the three-glass collection will have a WBC of how much compared to the first specimen?

Answer 63

10x

Question 64

In the Stamey-Mears test for Prostatitis, which specimen is used for urethral infection or inflammation?

Answer 64

VB1

Question 65

In the Stamey-Mears test for Prostatitis, which specimen is used for urinary bladder infection?

Answer 65

VB2