Specific diagnosis of ascaris is made by -a) Adult worm in stool b) Egg detectionc) Antigen detectiond) Antibody detectione) Skin test
Laboratory diagnosis of Ascariasis
Parasitic diagnosis:

Demonstration of characteristic Ascaris eggs in the stool: Eggs are passed in large numbers.
Concentration of stool by Salt floatation and Formalin-ether method- light infections
Demonstration of egg in bile (duodenal intubation)
Demonstration of adult worm in stool/ vomitus- after treatment with antihelminthics.
Demonstration of larvae in gastric aspirate, sputum or bronchial aspirates – pulmonary infections
Serodiagnosis- In case extraintestinal Ascarisis

Antibody detection by

Microprecipitation on the larvae
Indirect hemagglutination test
Immunofluorescent antibody test.
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