In the Enterotube II, The alpha-Naphthol reagent is used for which test? Select
ID: 99764 • Letter: I
Question
In the Enterotube II, The alpha-Naphthol reagent is used for which test?
Select one:
a. PA
b. Dulcitol
c. Citrate
d. Lysine
e. VP
In the Enterotube II, if your VP test has a red result this indicates:
Select one:
a. Sulfur reduction
b. Citrate utilization
c. Glucose fermentation
d. Urea hydrolyzation
e. Acetoin production
Lab exercise 8-5: Which of the following statements is NOT true?
Select one:
a. Type AB+ patients have no A, B, or Rh antibodies
b. The agglutination reaction can be performed on a slide
c. AB and Rh are the only antigens on RBCs
d. Type O+ blood is the most common in the U.S.
e. Anti-Rh antibodies are also called anti-D antibodies
Explanation / Answer
1.In the Enterotube II, The alpha-Naphthol reagent is used for VP test
VP is a test used to detect acetoin in a bacterial broth culture. The test is performed by adding alpha-naphthol and potassium hydroxide to the Voges-Proskauer broth which has been inoculated with bacteria. A cherry red color indicates a positive result, while a yellow-brown color indicates a negative result.