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on April 16, 2020

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BAERMANN TECHNIQUE

The Baermann technique is used to separate larvae from faecal material. For example: Diagnosing lungworm infection The identification of third stage larvae [L3] from a faecal culture. Larval nematodes (hookworm, S. stercoralis, or Trichostrongylus spp.) may be recovered. PRINCIPLE The Baermann technique is based on the active migration or movement of larvae.Faeces are suspended in water. The larvae move into the water. They sink to the bottom and can be collected for identification. The main difference between this method and the Harada-Mori and petri dish methods is the greater amount of fresh stool used, possibly providing a better chance of larval recovery in a light infection. Besides being used for patient fecal specimens, this technique can be used to examine soil specimens for the presence of larvae. EQUIPMENT · Funnel – size according to need · ...

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