RVC/FAO guide to Veterinary Parasitology
Baermann technique: Examination and interpretation

Examine under compound microscope at 10 x 10 magnification.

Free-living nematodes stain deeply brown in iodine and can be distinguished by the presence of a double bulbed (rhabditiform) oesophagus.

Oesophagus diagram


For identification of larvae of parasitic nematodes click on:

Lungworm Larvae

Third Stage Larvae (L3)


Care is needed to distinguish lungworm larvae from other nematodes and plant debris.