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[MT 6317] Clinical Chemistry Laboratory > [2S] UNIT 8 Glucometer > Flashcards

[2S] UNIT 8 Glucometer Flashcards

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1
Q

Point-of-care test for glucose conducted close to the site of patient care

A

Glucometer

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2
Q

Working principle of a glucometer

A

Electrochemical

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3
Q

Blood from a capillary puncture is introduced to a film strip comprised of several layers, each with unique function

A

Glucometer

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4
Q

T/F: Enzymes or enzymatic reaction are better than colorimetric assays in detecting analytes

A

T

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5
Q

Why is glucometer not the most ideal for glucose when it also detects enzymes?

A

We do not know how much enzymes are in a strip, that’s why we do not use this for FBS

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5
Q

Enzymes such as glucose oxidase, hexokinase, and glucose dehydrogenase are used with reflectance or electrochemical detection

A

Glucometer

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6
Q

The area of strip where it contains a reagent and also collects the blood sample. Majority where the chemical reaction takes place

A

Capillary Channel for Sample

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6
Q

These monitoring devices are used in the home, in the physician’s office, or at the bedside in the hospital to monitor for hypoglycemia and hyperglycemia

A

In vitro diagnostic test systems: Glucometer

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7
Q

Requirements for blood-glucose monitoring systems for self-testing in managing diabetes mellitus

A

In vitro diagnostic test systems: Glucometer

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7
Q

T/F: Glucometer is for screening and confirming DM

A

F; NOT

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8
Q

Another reason why glucometer is not for screening / confirmatory

A

Whole blood is used, specifically capillary blood. WB - the cells are still in contact w/ extracellular glucose, chances are they will try to metabolise glucose

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8
Q

T/F: In a finger prick, the depth should not go beyond 2.4 mm, so a 2.2 mm depth maybe used

A

T

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8
Q

Tends to give approx. 10%-15% lower glucose readings than plasma, but the percentage varies on the basis of hematocrit, analysis technique, and sample timing (fasting vs. postglucose load)

A

Whole Blood

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9
Q

T/F: Most reference values rely on measurement of the serum / plasma

A

T

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10
Q

T/F: In capillary puncture, always squeeze the punctured finger to release the blood

A

F, DO NOT SQUEEZE

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10
Q

What finger should be pricked?

A

Ring / Middle finger

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11
Q

ADVANTAGES OF A GLUCOMETER

T/F: Small blood volume

A

T

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11
Q

T/F: Once the device touched the drop of blood, it will react with glucose oxidase, hexokinase, and glucose dehydrogenase

A

T

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11
Q

ADVANTAGES OF A GLUCOMETER

T/F: Immediate results—no lab transportation

A

T

11
Q

T/F: It is important to wipe the first drop of blood with cotton as it is contaminated with tissue fluid

A

T

12
Q

ADVANTAGES OF A GLUCOMETER

T/F: Whole blood, urine, and other body fluids analyzed without processing

A

T

12
Q

ADVANTAGES OF A GLUCOMETER

T/F: Narrow menu of tests available

A

F; Wide menu

13
Q

ADVANTAGES OF A GLUCOMETER

T/F: Works within clinical patient flow

A

T

14
Q

DISADVANTAGES OF A GLUCOMETER

T/F: More expensive than traditional laboratory tests

A

T

15
Q

DISADVANTAGES OF A GLUCOMETER

T/F: Quality is questionable as anyone can run the analysis

A

T

15
Q

DISADVANTAGES OF A GLUCOMETER

T/F: Easy regulatory compliance, billing, and documentation

A

F; Difficulties with regulatory
compliance, billing, and
documentation

15
Q

DISADVANTAGES OF A GLUCOMETER

T/F: Patient-focused staff with little formal education/experience in laboratory testing

A

T

16
Q

Are routine tests that verify the reliability of a Glucometer (ACCU-CHEK® Performa meter) results at different ranges (using QC solution vials 1 and 2)

A

Quality Control Tests

17
Q

Are routine tests that verify the test strip and QC solution integrity

A

Quality Control Tests

18
Q

Are routine tests that verify the accuracy of the operator’s technique

A

Quality Control Tests

19
Q

T/F: All operators must be able to perform QC tests. They can be done any
time and are a good way to maintain your skill with the meter.

A

T

19
Q

WHEN TO PERFORM A QC TEST

T/F: Every 24 hrs

A

T

20
Q

WHEN TO PERFORM A QC TEST

T/F: Immediately before patient testing if the test has not been done within the last 24 hours.

A

T

21
Q

WHEN TO PERFORM A QC TEST

T/F: If the meter is not dropped

A

F; If the meter is dropped

21
Q

WHEN TO PERFORM A QC TEST

T/F: Every time you open a new container of test strips or a new vial of QC solutions

A

T

22
Q

WHEN TO PERFORM A QC TEST

T/F: If there is a question about a patient’s glucose results (i.e., if the glucose result is inconsistent with clinical presentation) to ensure the meter is working properly.

A

T

23
Q

How many are the quality control solution vials?

A

2 vials (1 CN & 1 CP)

23
Q

Supplies for QC Test

A

Glucometer
Test strip container
Quality Control solution vials (1 and 2)

23
Q

T/F: Always check the expiration date on the test
strip container and the QC vial to ensure that they have not expired.

A

T

24
Q

APPLYING THE QC SOLN

Mix the QC solutions by gently inverting the bottle _ times

A

5

25
Q

APPLYING THE QC SOLN

T/F: If you are opening the QC vial for the first time, write the date opened on the vial label.

A

T

25
Q

APPLYING THE QC SOLN

T/F: Always discard the 1st drop of QC solution

A

T

26
Q

When enough QC solution is applied to the test strip, an
________ symbol flashes on the screen to show that the meter is analyzing the QC solution

A

hourglass

27
Q

T/F: If results remain outside acceptable range after two
attempts, do not use the meter for patient testing

A

T

28
Q

Color of QC solution vial 1 cap

A

Grey

29
Q

Color of QC solution vial 2 cap

A

White

[MT 6317] Clinical Chemistry Laboratory (10 decks)

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