4.9 Reagent Strip testing (Urobilinogen) Flashcards
Principle for Urobilinogen reagent strip?
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
h
Reagent for urobilinogen in multistix:
a. M&C: Methyl Red & Bromthymol Blue
b. Tetrabromophenol blue
c. GOD
d. Sodium nitroprusside
e. Dichloroaniline diazonium salt
f. Pdimethylaminobenzaldehyde
g. Methoxyenzene-diazoniumtetrafluoroborate
h. Derivative pyrrole amino acid ester
f
Reagent for urobilinogen in Chemstrip:
a. M&C: Methyl Red & Bromthymol Blue
b. Tetrabromophenol blue
c. GOD
d. Sodium nitroprusside
e. Dichloroaniline diazonium salt
f. Pdimethylaminobenzaldehyde
g. Methoxyenzene-diazoniumtetrafluoroborate
h. Derivative pyrrole amino acid ester
g
Which among the following is more specific?
f. Pdimethylaminobenzaldehyde
g. Methoxyenzene-diazoniumtetrafluoroborate
g
Color reaction for urobilinogen:
a. Pink, red
b. Red, pink
c. Yellow, Red
a
Reading time for urobilinogen:
a. 10s
b. 30s
c. 60s
c
Sensitivity/Detection Limit:
0.4 mg/dL
a. Multistix
b. Chemstrip
b
Sensitivity/Detection Limit:
0.2 mg/dL
a. Multistix
b. Chemstrip
a
Sources of Interference
Old specimen
a. F+
b. F-
b
Sources of Interference
Porphobilinogen and other Ehrlich Reactive Compounds
a. F+
b. F-
a
Porphyria – Clinical significance of Porphobilinogen
T or F
T
UBG – any amount <1 is reported as NORMAL, never reported as negative
T or F
T
