radial immunodiffusion


Also found in: Dictionary, Thesaurus, Legal, Encyclopedia, Wikipedia.
Related to radial immunodiffusion: immunoelectrophoresis, Double Immunodiffusion

gel dif·fu·sion pre·cip·i·tin tests in one di·men·sion

precipitin tests in which antigen solution and antibody incorporated in agar are layered in tubes, permitting effective diffusion in the vertical dimension; the antibody-containing agar may be overlaid directly with antigen solution (single [gel] diffusion in one dimension).

radial immunodiffusion

Abbreviation: RID
A means of measuring the amount of antigen in a sample in which a solution containing the antigen is dropped into a gel evenly impregnated with antibody. The diameter of the ring that precipitates around the solution varies directly with the amount of antigen in the solution.
See also: immunodiffusion
Mentioned in ?
References in periodicals archive ?
Comparison of total ricin + RCA concentration of 18 plant introduction accessions of castor estimated with radial immunodiffusion at the University of Texas Southwestern Medical Center (UTSWMC) at Dallas, TX, and Texas Tech University Health Science Center (TTUHSC) at Lubbock, TX.
In addition, radial immunodiffusion did not show any lipase activity within the immunoglobulin precipitation bands.
Effect of processing time and storage on fibrinogen content of EDTA plasma assayed by radial immunodiffusion [Letter].
Most significant in our analysis of these disparate ratios is the high proportion of observations that differ from ideal when radial immunodiffusion was used as the immunologic method for TRF.
To resolve this question, we took a blood sample from the patient that showed a CRP of 0.274 g/L, an ASO of 5.35 x [10.sup.6] ICJ/L, and an IgM of 55.1 g/L measured by the nephelometric method and assayed it by different methods, i.e., the single radial immunodiffusion (SRID) method that uses a kit (Behringwerke AG) for CRP and IgM and the Rantz-Randall (RR) method that uses human type O erythrocytes (Eiken Chemical, Tokyo) for ASO.
Problems in the quantitative estimation of human serum haptoglobin by single radial immunodiffusion. Clin Chim Acta 1969;26:588-90.