URINALYSIS Flashcards

(31 cards)

1
Q

Provides a simple, rapid means for performing routine chemical tests on urine

A

Reagent strips

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

Quality Control of Reagent strips

A

Running positive and negative control every 24 hours (ideal: every shift)

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

What are the parameters in reagent strips?

A

Bilirubin
Glucose
Ketones
Specific Gravity
pH
Protein
Blood
Urobilinogen
Nitrite
Leukocyte Esterase

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

Principle of Bilirubin

A

Diazo Reaction

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

Principle of Glucose

A

Double Sequential Enzymatic Reaction

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

Principle of Ketones

A

Sodium Nitroprusside Reaction

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

Principle of Specific Gravity

A

(pKa) Dissociation constant change of a polyelectrolyte

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

Principle of pH

A

Double Indicator System

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

Principle of Protein

A

Protein Error of Indicator

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

Principle of Blood

A

Pseudoperoxidase activity of Hemoglobin

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

Principle of Urobilinogen

A

Ehrlich’s Reaction

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

Principle of Nitrite

A

Greiss Reaction

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

Principle of Leukocyte Esterase

A

Leukocyte Esterase

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

Bilirubin False Positive Interferences

A

Highly pigmented urine
Phenazopyridine
Indicant
Metabolites of iodine

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

Bilirubin False Negative Interferences

A

Exposure to light
High concentration of nitrite
High concentration of ascorbic acid

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

Glucose False Positive Interferences

A

Oxidizing Agents
Detergents

17
Q

Glucose False Negative Interferences

A

High levels of ascorbic acid
ketones
High SG

18
Q

Ketones False Positive Interferences

A

Highly pigmented red urine
Pthalein dyes
Medications with sulfhydryl groups
Levodopa

19
Q

Ketones False Negative Interferences

A

Improperly preserved specimens

20
Q

Specific Gravity False Positive Interferences

A

High concentration of protein

21
Q

Specific Gravity False Negative Interferences

A

Highly alkaline urine

22
Q

Protein False Positive Interferences

A

Highly pigmented specimen
Phenazopyridine
Antiseptics
Chlorhexidine
High SG

23
Q

Protein False Negative Interferences

A

Presence of proteins other than albumin

24
Q

Blood False Positive Interferences

A

Oxidizing agent
Bacterial peroxidases
Menstrual Contamination

25
Blood False Negative Interferences
High SG Formalin High concentration of nitrite High concentration of ascorbic acid
26
Urobilinogen False Positive Interferences
Ehrlich reactive compounds; porphobilinogen indicant sulfonamides methyldopa
27
Urobilinogen False Negative Interferences
Old specimen Preservation with formalin High concentration of nitrite
28
Nitrite False Positive Interferences
Oxidizing agent Formalin Nitrofurantoin
29
Nitrite False Negative Interferences
High concentration of ascorbic acid Presence of antibiotic High SG
30
Leukocyte Esterase False Positive Interferences
Oxidizing agents Formalin Nitrofurantoin
31
Leukocyte Esterase False Negative Interferences
High concentration of ; protein ascorbic acid glucose oxalic acid gentamicin