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MTAP 1 Clinical Chemistry > 1.1.3 Basic Principles and Techniques (Units and Conversion Factors) > Flashcards

1.1.3 Basic Principles and Techniques (Units and Conversion Factors) Flashcards

1
Q

Conventional Unit for Electrolytes?

a. mg/dL
b. pg/dL
c. mEq/L
d. ug/dL
e. ng/dL
f. g/dL

A

c

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2
Q

All conventional Unit has a unit w/v

T or F

A

F

Electrolytes are mEq/L

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3
Q

All SI unit has a unit of molar

T or F

A

F

Protein is g/L

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4
Q

How to convert Conventional Unit to SI unit?

a. Multiply by 10
b. Multiply by Conversion factor
c. Divide by 10
d. Divide by Conversion factor

A

b

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5
Q

How to convert SI Unit to Conventional unit?

a. Multiply by 10
b. Multiply by Conversion factor
c. Divide by 10
d. Divide by Conversion factor

A

d

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6
Q

Formula for Conversion Factor?

A

CF: 10/MW or Atomic W

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7
Q

All Analyte has a conventional Unit of mg/dL except:

Glucose
Urea
Bun
Uric acid
Ammonia
Cholesterol

A

Ammonia

Hint: JUST memorize the analyte that are not mg/dL and mmol/L

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8
Q

All Analyte has a conventional Unit of mEq/L except:

Ca2+
Mg2+
Sodium
Potassium
Cl-
HCO3
Iron

A

Iron

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9
Q

Ammonia

a. ug/mL
b. ng/mL
c. pg/mL
d. g/mL

A

a

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10
Q

T3

a. ug/mL
b. ng/mL
c. pg/mL
d. g/mL

A

b

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11
Q

T4
a. ug/mL
b. ng/mL
c. pg/mL
d. g/mL

A

a

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12
Q

Vit B12

a. ug/mL
b. ng/mL
c. pg/mL
d. g/mL

A

c

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13
Q

Protein

a. ug/mL
b. ng/mL
c. pg/mL
d. g/mL

A

d

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14
Q

Folic acid

a. ug/mL
b. ng/mL
c. pg/mL
d. g/mL

A

b

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15
Q

Iron

a. ug/mL
b. ng/mL
c. pg/mL
d. g/mL

A

a

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16
Q

Cortisol

a. ug/mL
b. ng/mL
c. pg/mL
d. g/mL

A

a

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17
Q

Creatinine

a. umol/L
b. nmol/L
c. pmol/L
d. g/L

A

a

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18
Q

Bilirubin

a. umol/L
b. nmol/L
c. pmol/L
d. g/L

A

a

19
Q

T4

a. umol/L
b. nmol/L
c. pmol/L
d. g/L

A

b

20
Q

T3

a. umol/L
b. nmol/L
c. pmol/L
d. g/L

A

b

21
Q

Ammonia

a. umol/L
b. nmol/L
c. pmol/L
d. g/L

A

a

22
Q

Iron

a. umol/L
b. nmol/L
c. pmol/L
d. g/L

A

a

23
Q

Cortisol

a. umol/L
b. nmol/L
c. pmol/L
d. g/L

A

a

24
Q

Folic acid

a. umol/L
b. nmol/L
c. pmol/L
d. g/L

A

b

25
Q

Proteins

a. umol/L
b. nmol/L
c. pmol/L
d. g/L

A

d

26
Q

Vit B 12
a. umol/L
b. nmol/L
c. pmol/L
d. g/L

A

c

27
Q

Urea is the whole compound while BUN is the nitrogen content of the urea

T or F

A

T

28
Q

How do you Convert Urea to BUN?

A

divide by 2.14

29
Q

How do you convert from BUN to urea?

A

mutiply by 2.14

30
Q

How fo you convert the conventional unit of Creatinine (mg/dL) to umol/L?

Creatinine: 113.12

A

CF = (10/MW) x 1000

= 88.4

31
Q

Both Creatinine and Bilirubin have:

CU: mg/dL
SI: umol/L

T or F

A

T

32
Q

What type of biochemical is Cortisol?

A

Steroids

Steroids are synthesize from Cholesterol

33
Q

Cortisol has a closed relation to Carbohydrate

T or F

A

F

Close to Cholesterol

34
Q

How do you convert Conventional unit for T4 to SI?

T4 = 777

A

CF = (10/MW) x 1000

=12.9

35
Q

Which among the following is an Accepted SI unit?

a. g/dL
b. mg/dL
c. g/L
d. mg/L

A

c

From protein

36
Q

What is the conversion factor if the protein has a Conventional unit of mg/dL?

A

0.01

37
Q

The following proteins are routinely expressed as mg/dL?

a. Fibrinogen
b. Transferin
c. Albumin
d. a and b

A

d

38
Q

154 mg/dL urea = _______ mmol/L

A

25.71mmol/L

Solution

154 x 0.167

39
Q

4.21iron umol/L = ___________ ug/L

A

23.52

Solution
4.21 / 0.179

40
Q

4.12 T4 umol/dL = _________ ng/L

A

319.38

Solution:

4.12 / 12.9
= 0.319379 x 1000
= 319.38

41
Q

321 mmole/L Potassium = ___________ mEq/L

A

321 mmole/L

42
Q

10 mg/dL calcium = __________ mEq/L

A

5

Solution:
10 x 0.25 = 2.5 mmol/L (This is Molarity = Moles/L)

Since Normality = Eq/L is given
N = M x V

Valence of Calcium is 2 (Ca2+)

N= 2.5 mmol/L x 2
N = 5

43
Q

Which of the following is monovalent?

a. Magnesium
b. Calcium
c. Chlorine
d. None of the above

A

c

44
Q

2mg/dL transferase = ____ g/dL = _____ g/L

A

0.002 g/dL

0.02 g/L

Solution:

2mg/dL / 1000mg = 0.002g/dL

0.002 g/dL x 10 dL = 0.02g/L

MTAP 1 Clinical Chemistry (97 decks)

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