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Lab Manual for UCSF Clinical Laboratories

Lab Manual for SFGH

Internal Resources


Item Value
Available Stat? No
Test code PINW
Performed by? Microbiology (Parasitology)
Sendout? no
Price range $
In House Availability Mon. - Fri., day shift
Principle Pinworms (Enterobius vermicularis) are intestinal nematodes. The female worms migrate down into the colon and out the anus, and deposit eggs around the anal opening, usually at night. The SWUBE¨ paddle is a clear plastic paddle coated on one side with a sticky adhesive. The sticky side of the paddle is pressed against the perianal skin and collects and holds pinworm eggs. The paddle is examined microscopically for the presence of pinworm eggs. Alternatively, CLEAR, not frosted, plastic tape can be used and placed sticky side down on a microscope slide.
Patient Preparation Specimens should be collected on 3 consecutive days to rule out pinworm infection. Collect each specimen first thing in the morning, before the patient has bathed or used the toilet.
Container type SWUBE paddle. Pinworm collection kits containing 3 SWUBE paddles and a collection instruction sheet are available from Lab Support Services (206-8199).
Collection Instructions Collect perianal specimens using SWUBE paddles.
Sample type Perianal
Special instructions CAUTION: Pinworm eggs are very infectious. Always wash hands after collection. Warn your patients of the contagiousness of this parasite.
Synonyms Enterobius Vermicularis;Pinworm (Enterobius Vermicularis);
Stability Hold specimens at room temperature until delivery to the Microbiology Lab (2M33).
Causes for rejection Stool specimens are NOT satisfactory for pinworm examination, SWUBE paddles that are contaminated with stool are not acceptable for examination.
References 1. Garcia, LS, Diagnostic Medical Parasitology, ASM Press, 5th Ed., Washington, DC, 2007.

2. SWUBE(R) Paddle Product Insert. Becton, Dickinson and Company, Lincoln Park, NJ, 1975.
CPT coding 87172
Last Updated 11/20/2010 9:30:16 AM
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