equilibrium dialysis


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e·qui·lib·ri·um di·al·y·sis

in immunology, a method for determination of association constants for hapten-antibody reactions in a system in which the hapten (dialyzable) and antibody (nondialyzable) solutions are separated by semipermeable membranes. Because, at equilibrium the quantity of free hapten will be the same in the two compartments, quantitative determinations can be made of hapten-bound antibody, free antibody, and free hapten.

e·qui·lib·ri·um di·a·ly·sis

(ē'kwi-lib'rē-ŭm dī-al'i-sis)
immunology A method for determination of association constants for hapten-antibody reactions in a system in which the hapten (dialyzable) and antibody (nondialyzable) solutions are separated by semipermeable membranes.

equilibrium

a state of balance between opposing forces or influences. In the body, equilibrium may be chemical or physical. A state of chemical equilibrium is reached when the body tissues contain the proper proportions of various salts and water. See also acid-base balance and fluid balance. Physical equilibrium, such as the state of balance required for walking or standing, is achieved by a very complex interplay of opposing sets of muscles. The labyrinth of the inner ear contains the semicircular canals, or organs of balance, and relays to the brain information about the body's position and also the direction of body motions. Genetic equilibrium is achieved when the allelic frequencies do not change from generation to generation.

equilibrium dialysis
a technique for determining the affinity of an antibody for an antigen.
equilibrium disturbances
see posture, posture balance.
dynamic equilibrium
the condition of balance between varying, shifting and opposing forces that is characteristic of living processes.
References in periodicals archive ?
4] by equilibrium dialysis followed by evidence of increased [T.
Artifactually elevated serum-free thyroxine levels measured by equilibrium dialysis in a pregnant woman with familial dysalbuminemic hyperthyroxinemia.
4] concentrations in serum by an equilibrium dialysis method to only a minor extent (15).
We investigated the importance of adsorption in equilibrium dialysis.
Equilibrium dialysis seems the least compromised method.
Ultrafiltration devices tested for use in a free thyroxine assay validated by comparison with equilibrium dialysis.
In gold-standard methods, such as equilibrium dialysis, dilution is the key function to control, because the serum is first dialyzed before the separated dialysate is assayed for [T.
Comparison of results with those from a gold-standard method such as equilibrium dialysis or ultrafiltration is also valuable, if such facilities are available.
Serum free thyroxine in thyroidal and nonthyroidal illnesses: a comparison of measurements by radioimmunoassay, equilibrium dialysis and free thyroxine index.
Discrepancies between serum free triiodothyronine and free thyroxin as measured by equilibrium dialysis and analog radioimmunoassay in nonthyroidal illnesses.

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