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At least 19 recordsLinked to original sources
PubMed1976

[Comparison of the sensitivity of complement-fixation test and latex-fixation test in the demonstration of a migration phase of ascariasis (Ascaris suum) in a non-specific host].

The authors compared the sensitiveness of the complement-fixation reaction and the latex-fixation test in the demonstration of a migration phase of ascariasis in a non-specific host (rabbit). The sensitiveness of the latex-fixation test was higher by the value of one dilution of the geometric series, on an average.

Animals↗
PubMed1961

A latex fixation test using British latex and bovine gamma globulin.

A British polystyrene latex-bovine gamma globulin fixation test which can be used for serum titrations is described. It is technically easier to perform than the latex fixation test of Singer and Plotz (1956) and appears to be equally sensitive. There was agreement with a sensitized sheep cell agglutination test in 264 of 300 cases (88%).

Animals↗
PubMed1979

A simple, rapid micro-latex fixation test.

A micro-latex fixation test (LFT) for the determination of rheumatoid factor (RF) is presented. Its advantages compared to similar tests are greater precision, simplicity, increased sensitivity, lower cost, reproducibility and adaptibility to large-scale testing. Micro-LFT titres are presented from a wide range of sample populations. The majority of normal samples show measureable titres whereas rheumatoid patients show high titres. A large sampling of pre- and post-transplant sera from kidney patients was studied and the micro-LFT titres were in the range of normal persons. The transplant sera were tested for lymphocytotoxic antibodies and no correlation was observed with the micro-LFT titres.

Adult↗
PubMed1979

Quality control of the latex-fixation test.

Standardization of the latex-fixation test for the detection of rheumatoid factor may be achieved by the preparation of a standard reference serum. A number of guidelines for the quality control of precision and sensitivity of the test are suggested. In the use of dilution procedures, a 0.1 log10 or a 0.05 log10 difference between tubes is employed. The end point is defined and titer expressed in terms of a final dilution represented by the amount of antigen-antibody added. For statistical purposes all serologic data are geometrically expressed. Commercial kits may be standardized in terms of minimum detectable units and normalized for titer and unit values to enable laboratories to compare results.

Humans↗
PubMed1990

Comparative study of test kits for measurement of rheumatoid factors by the latex fixation test.

The performance of 14 test kits for the measurement of rheumatoid factors by the latex fixation test was investigated; all results were expressed in IU/ml. Reproducibility and properties of control sera were also studied. It was found that half of the kits did not satisfactorily detect rheumatoid factor levels lower than 25 IU/ml. Most kits performed reasonably well in practice. Positive control sera only rarely met strict requirements. The relative costs did not always have a clear correlation with the quality of the results. The variation caused by differences between kits became acceptable when the results were expressed in IU/ml.

Humans↗
PubMed1981

A simple and rapid latex fixation test for measuring immunoglobulins produced in cell cultures.

A rapid and simple latex fixation test (LFT), which quantifies immunoglobulin (Ig) released into culture supernatants is described. Latex particles are coated with rabbit anti-human IgG, IgA or IgM antibodies. With this LFT technique the concentration of Ig is determined within a few minutes. The LFT is as sensitive and quantitative as double-antibody radioimmunoassay and is capable of detecting 35, 68 and 225 ng/ml of IgG, IgA and IgM, respectively.

Animals↗
PubMed1978

[Comparison of the sensitivity of the passive, indirect hemagglutination reaction and the latex fixation test in the demonstration of the migratory phase of experimental ascariasis (Ascaris suum) in swine].

The authoresses verified diagnostic sensitivity of two serological tests -passive indirect hemagglutination [IHA] reaction modified by the authoresses and latex-fixation test [LFT] when proving the post-invasion migratory phase of ascariasis [Ascaris suum] in experimentally infected swine. The IHA reaction was found to be more sensitive than the LFT in most cases [62.2%] by two to three values of the geometric series. The invasion can be detected by the IHA reaction from 7th to 120th day and by the LFT from 7th to 49th day after invasion.

Animals↗
PubMed1989

Reliability of a rapid latex fixation test for detecting group B streptococci in the genital tract of parturients at term.

The purpose of this prospective investigation was to determine the reliability of a rapid latex particle agglutination test in detecting group B streptococci in the lower genital tract of laboring women. Five hundred asymptomatic patients with intact membranes who were in labor at term underwent sterile speculum examination. Secretions from the endocervix and vagina were collected with sterile swabs. One swab was inoculated directly onto a blood agar plate for culture. The other was initially placed into a Culturette transport system and then transferred into a test tube containing an enzyme extraction reagent. After a 60-minute incubation at 37C, the latex fixation test was performed on the residual liquid in the tube. The frequency of positive cultures in our population was 5.0%. The sensitivity and specificity of the rapid slide test were 88 and 99.6%, respectively. The positive and negative predictive values were 91.7 and 99.4%, respectively. The group B streptococci latex fixation test appears to be a rapid and reliable means of detecting group B streptococci in the lower genital tract of term patients with intact membranes. Use of this method should permit a more selective approach to the intrapartum chemoprophylaxis of women colonized with group B streptococci.

Female↗