practical Flashcards
(27 cards)
kinyon primary stain is
Carbol fuschin
flourochrome counter stain is
potassium permanganate
what is the appearance of a positive MGIT tube
florescence under UA light
1-9 AFB organisms/field on kinyoun stain is:reported as:
+3
Effect of room temp >85 C
increase reactivity giving false positive
Serum that agglutinates w/ the cardiolipin reagent may be reported as: Treponoman pallidum
reactive or weakly reactive
Positive RPR tests should be confirmed w/:
FTA-
EIA
TP-PA
TPHA
clinical gram stain quantity should be should be expressed as
few
modarate
many
rare
trichrome stain is fixed by
PVA
SAF
Acid fast stains are fixed with
SAF
formalin
Fluorescent stains are fixed with:
formalin
Fixative used for recovery of helminth eggs:
formalin
Counterstain in modified acid fast stain is:
Methylene blue
Giemsa stain would be appropriate for:
Trypanosoma cruzi, P. falciparum
what are the smears used for ID
thin smear
what is the color of the background of the trichrome stain
green
what is the color of Cytoplasm- trophs in trichrome
blue green
what is the color Cytoplasm cysts in trichrome stain
cysts = blue green, may be purple tinged.
what is the color if Nuclei in trichrome strain
red, sometimes tinged with purple
what is the color of cellular illusion in tricrome stain
red, sometimes tinged with purple
Fungal elements on calcafluor will appear:
blue-white or green fluorescent
Two microscopic structures associated w/ Candida albicans:
germ tubes
chlamydocanidia
Fungal elements on calcafluor will appear:
blue white or green fluorescent
In the Cryptococcal Antigen test for CSF, latex particles are bound to what?
Antibodies to the polysaccharide capsule