Urinalysis and Body Fluids 6th Edition by Majorie DiLorenzo, Susan Strasinger

Exercise 72

The reagent in the Multistix reaction for urobilinogen is:

A. A diazonium salt

B. Tetramethylbenzidine

C. p-Dimethylaminobenzaldehyde

D. Hoesch reagent

Step 1 of 2

Urobilinogen reagent reaction:

Urobilinogen is detected both in Multistix and chemstrip brands of reagent strip

Multistix:

• Ehrlich’s aldehyde reaction is done in this strip.

• The strip has p-dimethylaminobenzaldehyde which reacts with urobilinogen in urine producing light to dark pink colors.

• Results reported in EU (Ehrlich units) equal to mg/dL (milligrams per deciliter).

• Normal readings are 0.2 and 1 and abnormal readings are 2, 4 and 8.

Therefore, “p-dimethylaminobenzaldehyde” is the reagent in urobilinogen multistix reaction. Hence, the correct answer is option.