Exam 12: Other Technologies and Automation

In performing an antibody screen by the solid phase technique, a monolayer of red blood cells is formed at the top of the microplate wells following the addition of indicator cells. This result should be interpreted as:

When performing an antibody screen by gel technology, the following steps are eliminated:

In a gel-based technology, the solid band at the top of the gel indicates a_____ , whereas formation of a pellet at the bottom of the microtubes indicates_____ .

Which of the following factors are likely to cause false-positive results while using gel technology?

An anti-M detected by using gel AHG antibody screening cards is considered clinically insignificant.

The washing procedure is applicable to which of the following serologic methods?

Upon centrifugation of an antibody screen procedure done by the gel system, the red blood cell agglutinates are dispersed throughout the gel column with a few agglutinates at the bottom of the microtubes. This reaction should be graded as a:

After completing an antibody screen using the gel testing method, results after centrifugation yield a pellet of unagglutinated cells at the bottom of the microtube and a thin layer of cells at the top gel column. This situation commonly indicates:

Which of the following tests is not available for both the gel testing method and solid phase technology?

A layer of red blood cells agglutinates at the top of the gel media, and a pellet of unagglutinated red blood cells forms at the bottom. These findings are comparable to which of the following reactions in the test tube?

Using the gel test system, the technologist used a 3% cell solution. What would be the probable outcome?

Which of the following substances may interfere with gel technology but not SPRCA technology?

The FDA has approved the _____ for application of gel technology.

The gel system has all of the following advantages over the traditional tube procedure except:

Using the affinity column technique, a serologic reaction that forms a fine red blood cell band at the top of the gel column and a red blood cell button at the bottom of the gel column is interpreted as:

Which of the following is a factor in possible false-negative or false-positive results when using the gel system to screen for antibodies?

The indicator cells used to detect antibodies in a solid phase technology are:

If you had a lipemic and icteric sample that needed to have an antibody screen done, which of the following would obtain the best results?

Low ionic strength saline (LISS) is added to antibody screening methods for which of the following test systems?

Which of the following statements is the most accurate? A mixed-field in the gel system: