A clinical lab scientist observing the staining in an antinuclear antibody (ANA)test noted that the nuclei of interphase cells appeared to have dozens of dots scattered evenly over the entire nucleus. Chromosomes at metaphase did not show any staining. This pattern should be reported as homogeneous.

Question

Quizplus · Accepted Answer

The description given matches the speckled pattern, not the homogeneous pattern. In a homogeneous pattern, the entire nucleus would appear uniformly stained, not dotted or speckled.

A Clinical Lab Scientist Observing the Staining in an Antinuclear