Page 46 - MNU-PM503 Parasitology practical book
P. 46
Pharm D- Clinical Pharmacy Program Third Level Parasitology and virology (PM503)
:
Laboratory diagnosis
▪ Microscopic identification of eggs collected in the perianal area is the method of
choice for diagnosing enterobiasis. This must be done in the morning, before
defecation and washing, by pressing transparent adhesive tape ("Scotch test",
cellulose-tape slide test) on the perianal skin and then examining the tape placed on
a slide.
▪ Alternatively, anal swabs or "Swube tube" (a paddle coated with adhesive material)
can also be used.
▪ Eggs can also be found, but less frequently, in the stool, and occasionally are
encountered in the urine or vaginal smears. Adult worms are also diagnostic, when
found in the perianal area, or during ano-rectal or vaginal examinations.
3-Trichinella spiralis
Trichinella capsule (containing larva):
a- Ellipsoidal in shape.
b- Between muscle fibers.
c- Size: 0.5X0.2mm.
d- Contains coiled larva (1 mm.
long).
Larva:
This is a larva freed from the cyst. Larva is
about 0.8 mm in length.
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