dog and cat assay data sheet
detection of Cryptococcus
neoformans by real time polymerase chain reaction
F0003 is included
on P0036 - canine
neurological panel and on
P0037 - feline neurological panel
is a fungus that is found worldwide and is the etiologic agent
of cryptococcosis. It is commonly associated with old pigeon
manure, but it has also been recovered from dried excreta of
chickens, sparrows, starlings, and other birds.
C. neoformans uses the creatinine in avian feces as a
nitrogen source. It thereby gains a competitive advantage over
other microorganisms and multiplies exceedingly well in dry bird
manure accumulated in places that are not in direct sunlight.
generally accepted that the organism enters hosts, including
pets and humans, by the respiratory route in the form of a
dehydrated yeast or as spores. Most cryptococcosis infections
are mild and occur without symptoms. Diffuse pulmonary infection
is often asymptomatic and unrecognized. Persons with weakened
immune systems due to AIDS, cancer or transplantation, however,
are more susceptible to symptomatic infection.
generalized form of cryptococcosis begins with a lung infection
and spreads to other areas of the body, particularly the central
nervous system, and is usually fatal if left untreated. The
cutaneous form is characterized by acne-like skin eruptions or
ulcers with nodules just under the skin. The cutaneous form is
generally very rare in normal individuals.
contact with infected pets and their excreta can pose a
significant health risk to immunocompromised patients, it is
important that their exposed pets be screened for this fungus.
Culture identification is labor intensive and cultures are
frequently contaminated by other fungi. Molecular detection by
PCR provides quick, sensitive and specific detection of
neoformans in fecal
or respiratory samples.
Help confirm the disease causing agent
Shorten the time required to confirm a clinical
Help ensure that pets are free of this fungus
Early prevention of spread of this fungus
Minimize human exposure to this fungus
Safety monitoring of biological products and vaccines
that derive from animals
Rectal swab, or tracheal swab, or 0.2 ml feces, or 0.2 ml whole
blood in EDTA (purple top) tube, or 0.2 ml
Contact Zoologix if advice is needed to determine an appropriate specimen type for a specific diagnostic application. For specimen types not listed here, please contact Zoologix to confirm specimen acceptability and shipping instructions.
specimen types, if there will be a delay in shipping, or during
very warm weather, refrigerate specimens until shipped and ship
with a cold pack unless more stringent shipping requirements are
specified. Frozen specimens should be shipped so as to remain
frozen in transit. See shipping
instructions for more information.
2 business days
Qualitative real time PCR