4.7 Reagent Strip testing (Blood)

Question 1

Principle of blood

a. Sorensen’s Protein Error of Indicators
b. Double sequential enzyme reaction
c. Double Indicator Reaction
d. Na(Sodium) Nitroprusside reaction
e. Pseudoperoxidase activity of heme
f. Diazo reaction
g. Greiss’ Reaction
h. Ehrlich’s reaction

Answer 1

e

Question 2

Myoglobinuria also tests positive for the reagent strip test for blood because it contains myoglobin, which is heme containing

T or F

Answer 2

T

Question 3

Reagents for multistix in blood?

a. M&C: Methyl Red & Bromthymol Blue
b. Tetrabromophenol blue
c. GOD
d. Sodium nitroprusside
e. Dichloroaniline diazonium salt
f. Pdimethylaminobenzaldehyde
g. p-arsanilic acid tetrahydrobenzo-quinolinol
h. Derivative pyrrole amino acid ester
i. Diisopropyl-benzenedihydro-peroxide
j. Dimethyl-dihydroperoxyhexane Tetramethylbenzidine

Answer 3

i

Question 4

Reagents for Chemstrip in blood?

a. M&C: Methyl Red & Bromthymol Blue
b. Tetrabromophenol blue
c. GOD
d. Sodium nitroprusside
e. Dichloroaniline diazonium salt
f. Pdimethylaminobenzaldehyde
g. p-arsanilic acid tetrahydrobenzo-quinolinol
h. Derivative pyrrole amino acid ester
i. Diisopropyl-benzenedihydro-peroxide
j. Dimethyl-dihydroperoxyhexane Tetramethylbenzidine

Answer 4

j

Question 5

Components for Chemstrip in blood
(Dimethyl-dihydroperoxyhexane Tetramethylbenzidine), includes:

Diisipropyl-benzene

a. Lysing agent
b. Oxidizing agent
c. Chromogen

Answer 5

a

Question 6

Components for Chemstrip in blood
(Dimethyl-dihydroperoxyhexane Tetramethylbenzidine), includes:

Tetramethylbenzidine

a. Lysing agent
b. Oxidizing agent
c. Chromogen

Answer 6

c

Question 7

Components for Chemstrip in blood
(Dimethyl-dihydroperoxyhexane Tetramethylbenzidine), includes:

dihydro-peroxide

a. Lysing agent
b. Oxidizing agent
c. Chromogen

Answer 7

b

Question 8

Tetramethylbenzidine is the chromogen common to both multistix and chemstrip

T or F

Answer 8

T

Question 9

Color reaction of Blood in reagent strip:

a. Red-Yellow
b. Yellow - Red
c. BLue-green

Answer 9

c

Question 10

Catalyst for color reaction in blood?

Answer 10

Heme

Question 11

Reaction may be homogenous or speckled in blood reagent strip:

Hematuria

a. Speckled
b. Homogenous

Answer 11

a

Question 12

Reaction may be homogenous or speckled in blood reagent strip:

Hemoglobinuria or Myoglobinuri

a. Speckled
b. Homogenous

Answer 12

b

Question 13

Reading time for Blood Reagent strip?

a. 10s
b. 30s
c. 60s

Answer 13

c

Question 14

Sensitivity/Detection Limit for blood reagent strip

a. 5-20 RBCs/mL
b. 5-30 RBCs/mL
c. 5-35 RBCs/mL

Answer 14

a

Question 15

Sources of Interference:

Strong Oxidizing Agents

a. F +
b. F -

Answer 15

a

Question 16

Sources of Interference:

Increase SG

a. F +
b. F -

Answer 16

b

Question 17

Sources of Interference:

Crenated cells (No cell lysed)

a. F +
b. F -

Answer 17

b

Question 18

Sources of Interference:

Bacterial peroxidases

a. F +
b. F -

Answer 18

a

Question 19

Sources of Interference:

Nitrite and formalin

a. F +
b. F -

Answer 19

b

Question 20

Sources of Interference:

Captopril

a. F +
b. F -

Answer 20

b

Question 21

Sources of Interference:

Ascorbic acid

a. F +
b. F -

Answer 21

b

Question 22

Sources of Interference:

Menstrual contam

a. F +
b. F -

Answer 22

a