The asymptotes of the sigmoidal immunoassay standard curve are the two ends of the curve which plateau on the response axis as the curve approaches infinitely high and infinitely low standard concentrations
In mathematics, a line or curve that acts as the limit of another line or curve. For example, a descending curve that approaches but does not reach the horizontal axis is said to be asymptotic to that axis, which is the asymptote of the curve
A line related to a given curve such that the distance from the line to a point on the curve approaches zero as the distance of the point from an origin increases without bound
A straight line which a curve approaches arbitrarily closely, but never reaches, as they go to infinity. The limit of the curve, its tangent "at infinity"
a straight line that is the limiting value of a curve; can be considered as tangent at infinity; "the asymptote of the curve"