Which Specimen Requirements Apply to the TdT Test

question 4

Multiple Choice

Which specimen requirements apply to the TdT test?

• A) A nonheparinized bone marrow aspirate
• B) Separated marrow cells washed with culture media
• C) Slides must be stored at 4°C in the dark
• D) None of the above
• E) All of the above

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Definitions:

Normal Distribution

Exhibiting symmetry around the mean, this probability distribution reveals that there are more occurrences close to the mean than far away from it.

Chi-squared Distribution

A statistical distribution that is used to describe the distribution of a sum of squared random variables, often used in hypothesis testing.

Degrees of Freedom

The number of independent pieces of information used in the calculation of a statistic, typically the size of the data set minus the number of parameters estimated.

Area

The measurement of the extent of a two-dimensional surface or shape, typically expressed in square units.