Rouleaux refers to which description?

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Prepare for the VetSkill Level 3 Diploma VN02 – Diagnostic Principles Test. Engage with multiple-choice questions, hints, and explanations. Achieve your certification!

Multiple Choice

Rouleaux refers to which description?

Explanation:
Rouleaux refers to red blood cells stacking in neat, coin-like columns. This happens when plasma proteins—especially fibrinogen and certain globulins—increase and reduce the normal negative charge that keeps cells apart, allowing them to line up in rows rather than remain as single cells. This is distinct from clumping or agglutination, where antibodies cause cells to stick together in irregular, multi-cell aggregates. On a smear, rouleaux appear as uniform stacks that can be dispersed by a saline solution, whereas true agglutination does not disperse in saline. Rouleaux is commonly seen with inflammatory states or conditions causing hyperproteinemia.

Rouleaux refers to red blood cells stacking in neat, coin-like columns. This happens when plasma proteins—especially fibrinogen and certain globulins—increase and reduce the normal negative charge that keeps cells apart, allowing them to line up in rows rather than remain as single cells. This is distinct from clumping or agglutination, where antibodies cause cells to stick together in irregular, multi-cell aggregates. On a smear, rouleaux appear as uniform stacks that can be dispersed by a saline solution, whereas true agglutination does not disperse in saline. Rouleaux is commonly seen with inflammatory states or conditions causing hyperproteinemia.

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