Immunoenzymatic colorimetric method for quantitative determination of Triiodothyronine (T3) concentration in human serum and plasma.
T3 ELISA kit is intended for laboratory use only.
TOXOPLASMA GONDII DNA Ctrl
TOXOPLASMA GONDII DNA Ctrl
Toxoplasma gondii is a protozoan that presents three stages in
its developmental life cycle: oocyst, tachyzoite and bradyzoite.
While only members of the family Felidae can be definitive
hosts of the parasite, a great variety of animals can harbour
the tissue cysts. Although consuming contaminated food is the
most common way of becoming infected, transplacental
infection may occur. The disease is normally benign, but
central nervous system disease may appear in
immunocompromised patients and the newborn.
Diametra Free B-HCG kit is an immunoenzymatic colorimetric method for quantitative determination of Free B-HCG (Free b-subunit Human Chorionic Gonadotropin) concentration in human serum.
Diametra Free B-HCG kit is intended for laboratory use only.
Characteristic symptoms of influenza in adults are: high fever, headache, photophobia, sore throat, cough, malaise and myalgia. Fever usually lasts for three days, while cough persists for longer. Sometimes, it causes croup in children.
Elderly patients suffering from chronic bronchopathy often present tracheobronchitis and bronchiolitis. Syndroms of bacterial pneumonia secundary to a viral infection are very frequent, specially in elderly people with a pre-existing pathology. Diffuse haemorrhagic viral pneumonia may develop in patients with a cardiovascular disease. Myositis and myoglobinuria have been described associated to influenza. Infants can present severe respiratory infection together with convulsions and encephalitis. Uncommon complications are: otitis media, myocarditis, toxic shock syndrome and Reye syndrome associated to aspirine ingestion. Infections by influenza virus is also associated with kidney or bone marrow transplanted patients. Isolated cases out of the epidemic season are difficult to diagnose clinically. It is also difficult to reach a clinical diagnosis during epidemics, since it can be confused with other respiratory diseases. Hence, the laboratory diagnosis is highly useful, particulary in high risk patients. Complement fixation, ELISA and IFA are the most useful technics to diagnosis the disease.
Leishmania are flagellated protozoa that present two phases in
its life cycle: amastigote (found within the reticuloendothelial
cells of mammalian hosts) and promastigote (the multiplying
form in the vector). It is transmitted through the bites of
infected female phlebotomines. The infection can be limited to
the macrophages around the bite (oriental sore) or spread
affecting the spleen, liver and bone marrow (kala-azar).
Toxoplasma gondii is an obligate intracellular protozoan parasite that is
distributed worldwide. Human can acquire the infection by accidental
ingestion of oocysts from cat feces, by ingestion of infected meat, in utero
or by transfusion or transmission by organ transplant. Most infections are
bening although severe symptoms appear in immunosupressed patients or
congenital infections. Women infected during the first trimester can have
spontaneous abortion and hydrocephalus. Disease acquired later in
pregnancy causes less severe illness. IgM antibodies appear 5 days after
infection and fall to low levels within weeks or months in the majority of
patients. IgG antibodies appear weeks after infection and persist for the
rest of the life. The TOXOPLASMA ELISA IgG has been standardised
against the WHO third international standard for anti-Toxoplasma serum
with a cut off control set at 10 I.U./ml.
Mycobacterium ulcerans is an strictly aerobic,
nonchromogenic, acid fast bacillary bacterium that grows
slowly at 29-33ºC. It is the causal agent of Buruli´s ulcer:
infection leads to extensive destruction of skin and soft tissue
with the formation of large ulcers usually on the legs or arms.
M. ulcerans is an environmental mycobacterium; Buruli ulcer
frequently occurs near water bodies.
Helicobacter pylori has a worldwide distribution and a high prevalence.
The infection with H. pylori is well established as a major cause of gastric
and duodenal ulcers. The persistent infection with H. pylori is a risk factor
for the development of gastric carcinoma and lymphoma. The infection
produces elevated levels of specific H. pylori IgG and IgA antibodies in
serum. IgM specific levels has not proven useful in the clinical laboratory.
ELISA tests for the detection of H. pylori antibodies are sensitive, specific
and cost effective in untreated patiens. The detection of H. pylori specific
IgA alone is less sensitive than the detection of specific IgG antibodies. In
untreated persons specific IgG and IgA remain elevated for years and
successful eradication decreases the IgG and IgA levels, although in some
individuals specific antibodies can persist during a long time. Because the
infection with H. pylori is so prevalent the test should be performed only
on individuals with symptoms. The prevalence of H. pylori antibodies
increases with the age. A positive result only indicates that the patient has
antibodies to H. pylori and if the individual has not been treated, a positive
result very likely indicates an active infection with H. pylori. A definitive
diagnosis should be given only when the clinical signs and symptoms of
the patient are compatible.
Neisseria meningitidis or meningococcus is a Gram-negative,
oxidase-positive, aerobic, coccal bacterium that appears
microscopically under diplococcal arrangement. Strains are
serogrouped on the basis of their capsular polysaccharides.
The meningococcus usually inhabits the human nasopharynx
without causing detectable disease. It may cause
Ureaplasma urealyticum belongs to the class Mollicutes, that
comprises fastidious small bacteria (in dimensions as well as in
genome size) lacking a cell wall. Ureaplasma are facultative
anaerobes that grow as colonies of extremely small size. They
are common bacteria of the urogenital tract. U. urealyticum
has been associated with non-gonococcal urethritis.
Rotavirus is an icosahedral, double stranded RNA virus of 80
nm in diameter. Mature virions are non-enveloped doubleshelled
viruses wheel-like appearance when viewed by
electron microscopy. In temperate climate countries, the
disease has a winter seasonal pattern. The primary mode of
transmission is via faecal-oral route. Rotavirus is the most
common cause of severe diarrhoea among children. Adults can
also be infected, though disease tends to be milder. The
incubation period for rotavirus disease is approximately 2 days.
The disease is characterized by vomiting and watery diarrhea
for 3 to 8 days, and fever and abdominal pain occur frequently.
Immunity after infection is incomplete, but repeat infections
tend to be less severe than the original infection.