Which statement describes the speckled ANA pattern more specifically?

Which statement describes the speckled ANA pattern more specifically?

• A. Homogenous
• B. Peripheral
• C. Speckled
• D. Centromere

Answer: (C)

When you read ANA patterns by indirect immunofluorescence, you’re looking at where the staining appears in the nucleus to get clues about the antibodies present. The speckled pattern is defined by many small, granular staining areas scattered throughout the nucleus rather than a uniform fill or a rim. That description is exactly what the term “speckled” conveys, so the best answer is the one that names the pattern itself. The other patterns describe different appearances: a uniform nuclear staining is homogeneous, a ring around the nucleus is peripheral, and discrete dots in the nucleus describe centromeres. Speckled patterns are common and can be associated with antibodies to ENA targets (such as Sm, RNP, SSA/Ro, SSB/La, etc.), but they aren’t disease-specific, which is why the pattern name itself is the key descriptor.

When you read ANA patterns by indirect immunofluorescence, you’re looking at where the staining appears in the nucleus to get clues about the antibodies present. The speckled pattern is defined by many small, granular staining areas scattered throughout the nucleus rather than a uniform fill or a rim.

That description is exactly what the term “speckled” conveys, so the best answer is the one that names the pattern itself. The other patterns describe different appearances: a uniform nuclear staining is homogeneous, a ring around the nucleus is peripheral, and discrete dots in the nucleus describe centromeres. Speckled patterns are common and can be associated with antibodies to ENA targets (such as Sm, RNP, SSA/Ro, SSB/La, etc.), but they aren’t disease-specific, which is why the pattern name itself is the key descriptor.