Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

MT6328 > S1 [LAB]: CHEMICAL EXAM OF URINE > Flashcards

S1 [LAB]: CHEMICAL EXAM OF URINE Flashcards

1
Q

Testing using reagent strip is performed within ___ after collection

A

1 hour

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Normal pH level of urine

A

4.5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Optimal temperature for reagent strip storage

A

below 30C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

T/F: Distilled water is used as a negative control in reagent strip

A

F

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

pH level of first morning urine

A

slightly acidic (5-6)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

pH level of urine following a meal

A

alkaline

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

T/F: An unpreserved urine specimen does not reach pH 9

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Indicator of pH in a reagent strip

A

methyl red & bromthymol blue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Reflects the kidneys’ role of compensating against acidosis

A

Urine pH

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Range detected by the pH indicator in the reagent strip

A

5-9

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Samples left standing can have falsely ___ pH as CO2 is lost and bacterial growth produces ammonia from urea

A

elevated

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Reagent strips are only sensitive to this specific protein

A

Albumin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

In respiratory and metabolic acidosis, the urine is expected to be ___

A

Alkaline

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

pH level associated with unpreserved specimen

A

9

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The most indicative of renal disease

A

Protein

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Often associated with early renal disease

A

Protein

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

The most frequent chemical analysis on urine

A

Glucose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

For the detection & diabetes mellitus monitoring

A

Glucose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Most valuable in management & monitoring of type-1 DM

A

Ketones

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

A deficiency in insulin, indicating the need to regulate dosage (insufficient insulin dosage)

A

Ketonuria

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

___ RBCs per microliter of urine is considered clinically significant

A

> 5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

___ provide the most accurate means for determining presence of blood

A

Hemoglobin testing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Heme-containing protein found in muscle tissue

A

Myoglobin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Myoglobin produces a clear ___ urine

A

red-brown

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

The ____ portion of myoglobin is toxic to the renal tubules; high concentrations can cause acute renal failure.

A

heme

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Primary test for dx, monitoring bacterial infection & evaluate the success of antibiotic

A

Nitrite

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Provides a rapid screening test for the presence of UTI; to detect cases in which urine CS may not be apparent

A

Nitrite

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Requires the longest time of all the reagent strip reaction (2 minutes)

A

Leukocyte

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

11th parameter in chemical exam of urine

A

Ascorbic acid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

Principle of ascorbic acid measurement

A

Tillman’s reaction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

Color change in Tillman’s reaction

A

Blue to green

32
Q

Component of the Tillman’s reagent

A

2,6-dichloroindophenol sodium

33
Q

Components of glucose in reagent strip

A

Glucose oxidase
Peroxidase
Potassium Iodide

34
Q

Principle of glucose in reagent strip

A

Double sequential enzyme reaction

35
Q

In glucose, the catalyst in the reagent strip is the ___

A

Glucose oxidase

36
Q

How many seconds for glucose?

37
Q

T/F: Glucose crosses the placenta, whereas insulin does not.

38
Q

How many seconds for bilirubin?

39
Q

Bilirubin in the reagent strip is based on the Coupling of Bilirubin with diazotized dicloroaniline in a ___ medium

A

strongly acidic

40
Q

Component of bilirubin in reagent strip

A

Dichloroaniline diazonium salt

41
Q

Color result of bilirubin in reagent strip

A

Tan&raquo_space; Shade

42
Q

How many seconds in ketone?

43
Q

Component of ketone in reagent strip

A

Sodium nitroprusside

44
Q

Ketone measurement is based on the ___ developed with acetoacetic acid or acetone and nitroprusside

A

purple color

45
Q

How many seconds for specific gravity?

46
Q

Component of specific gravity in reagent strip

A

BTB / polymethylvinyl ether

47
Q

In specific gravity, BTB produces a ___ color in urine of low ionic concentration

A

deep blue-green

48
Q

How many seconds for blood?

49
Q

Component of blood in reagent strip

A

Tetramethylbenzidine/ Dihydroperoxide

50
Q

The detection of occult blood is based on the ___-like activity of hemoglobin which catalyze the reaction of peroxide and the tetramethylbenzidine

A

peroxidase

51
Q

How many seconds for pH?

52
Q

Color of pH 5.0 in reagent strip

53
Q

Color of pH 8.5 in reagent strip

A

Blue-green

54
Q

Component of protein in reagent strip

A

Tetrabromphenol Blue

55
Q

Negative reaction for protein in reagent strip

56
Q

Positive result of protein in reagent strip

A

Green&raquo_space; Green

57
Q

The pigment responsible for the characteristic brown color of feces

58
Q

How many seconds for urobilinogen?

59
Q

Color of increased urobilinogen level in reagent strip

60
Q

Component of urobilinogen in reagent strip

A

p-diethylaminobenzaldehyde

61
Q

Urobilinogen measurment through the reagent strip is based on ___

A

Ehrlich reaction

62
Q

How many seconds for nitrite?

63
Q

Component of nitrite in reagent strip

A

Tetrahydrobenzoquinolone

64
Q

Nitrite test using reagent strip is based on ___

A

Griess reaction

65
Q

How many seconds for leukocyte?

66
Q

Component of leukocyte in reagent strip

A

Pyrrole amino acid ester diazonium salt

67
Q

pH level associated with unpreserved urine

68
Q

Bence jones protein is turbid and clear at what temperatures?

A

Turbid: 40-60C
Clear: 100C

69
Q

Amount of RBCs considered clinically significant

A

> 5 RBCs/ microliter

70
Q

T/F: If myoglobin is found in the urine, it produces a turbid red-brown color

A

False: clear red-brown color

71
Q

Strong positive reaction of bilirubin in reagent strip

72
Q

In the Watson- Schwartz test, the chloroform tube and butanol tube will have what respective results in urobilinogen?

A

Both are miscible

73
Q

In the Watson- Schwartz test, the chloroform tube and butanol tube will have what respective results in porphobilinogen?

A

Both are immiscible

74
Q

Normal value for urobilinogen in the urine

A

0.2-1.0 Ehrlich units

75
Q

Normal pH of the urine

MT6328 (16 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions