U2.2 Glycosylated Hemoglobin : Nycocard [L] Flashcards

1
Q

Formation of a hgb compound produced when glucose reacts with the amino group of hemoglobin

A

Glycosylated Hemoglobin

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1
Q

Glycosylated Hgb

The glucose molecule attaches non enzymatically to the hgb molecule to form a ________

A

Ketoamine

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2
Q

T/F The rate of formation is directly proportional to the plasma glucose concentration

A

T

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3
Q

Glycosylated Hgb

T/F Reflects the average blood glucose level over the previous 2 to 3 months

A

T

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4
Q

More reliable method of monitoring long-term diabetes control than random plasma glucose

A

HbA1c

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5
Q

HbA1c

Current ADA guidelines recommend that an HbA1c test be performed at least ___________ with patients who are meeting treatment goals and who have stable glycemic control

A

2x a year

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6
Q

HbA1c

For patients whose therapy has changed or who are not meeting glycemic goals, a __________ is recommended

A

a quarterly HbA1c test

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7
Q

HbA1c Specimen Collection and Storage

Specimen requirement

A

EDTA Whole blood sample

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8
Q

HbA1c Specimen Collection and Storage

T/F Patients need not be in fasting state

A

T

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9
Q

HbA1c Specimen Collection and Storage

Whole blood may be stored at ___°C for up to 1 week

A

4°C

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10
Q

Measuring Principle

a reflectometer

A

The NycoCard READER II

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11
Q

Measuring Principle

measures light reflected from the coloured surface of the NycoCard tests in three parts of the visible spectrum and calculates the test concentration

A

The NycoCard READER II

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12
Q

Measuring Principle

T/F In the nycocard reader, the reflected light from the test sample is measured relative to a white sample

A

T

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13
Q

The NycoCard HbAic kit materials

A
  • 24 tubes prefilled with reagent
  • 1 vial of washing solution
  • 24 test devices
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14
Q

Assay Test Procedure (4 steps)

A
  1. Dilute and lyse sample
  2. Apply sample
  3. Apply wash solution
  4. Read the result
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15
Q

3 Steps to operate the NycoCard Reader

A
  1. Adjusting
  2. White calibration
  3. Measure Test
16
Q

Nycocard Reader Results should be read within (n) minutes

A

5 minutes

17
Q

NycoCardTM HbA1c Test Principle

A

boronic acid affinity test principle

18
Q

affinity of boronic acid to the cis-diol configuration of glycated hemoglobin

A

boronic acid affinity test principle

19
Q

measures the color intensity of reflected light

A

NycoCard HbA1c Test Principle

20
Q

HbA1c Reference Range

A

Normal : <5.7%
Impaired : 5.7% - 6.4%
DM : >6.4%

21
Q

Significance of HbA1c in Diabetic Patients

T/F The incidence of retinopathy increases in patients with a HbA1c level between 6.0 to 7.0%

A

T, HbA1c level between 6.0 to 7.0%

22
Q

Significance of HbA1c in Diabetic Patients

T/F Fewer chances for retinopathy when the HbA1c level is <7.5%

A

F, should be <6.5%

23
Q

Significance of HbA1c in Diabetic Patients

T/F HbA1c level in diabetic patients recommended <7.0%

A

T

24
Q

Significance of HbA1c in Diabetic Patients

T/F HbA1c should be checked at least once a year

A

F, twice a year

25
Q

Significance of HbA1c in Diabetic Patients

T/F This is suggested that HbA1c level above 6.5% favor diabetes mellitus

A

T

26
Q

Limitations to interpret the HbA1c results from patients with conditions such as (6)

A
  1. Hemolytic anemia or other hemolytic diseases
  2. Homozygous sickle cell trait
  3. Pregnancy
  4. Blood loss
  5. Polycythemia
  6. Iron deficiency
27
Q

Limitations of HbA1c

T/F Diluted samples cannot be used

A

T

28
Q

Limitations of HbA1c

T/F Coagulated or hemolyzed samples can be used

A

F, cannot be used

29
Q

Limitations of HbA1c

If the sample has a hemoglobin value below _____ g/dL or above _____ g/dL

A

below 6.0 g/dL or above 20.0 g/dL