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Fecal Direct Smear
A microscopic examination technique where immediately fresh fecal matter is mixed with saline and evaluated for motile parasitic organisms.
Key Facts
- Samples must be collected directly from the rectum to prevent environmental degradation or litter contamination.
- Multiple slides are frequently required because the target flagellated parasites can be elusive and unevenly distributed.
- Refrigeration or delayed processing significantly reduces organism viability and compromises test accuracy.
- The method relies on observing active motility to identify live protozoa in the wet mount preparation.