Enterobiasis (Pinworm Infestation) Workup

Updated: Nov 23, 2021
  • Author: Wayne Wolfram, MD, MPH; Chief Editor: Russell W Steele, MD  more...
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Laboratory Studies

Without a visual report, diagnosis of enterobiasis can be confirmed using the knowledge that eggs are normally deposited in great quantities on the perineum at night.

Wide (2 inch) transparent tape is pressed against the perineum at night or in the morning before the patient bathes to capture eggs. [15] Three such specimens are usually consecutively collected.

Diagnosis is made by identifying eggs under the low-power lens of microscope. Dilute sodium hydroxide or toluene should be added to the slide.


Imaging Studies

Imaging studies are not indicated.