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Abstract

There is described a method of barcoding data needed to determine a calibration curve for a test element in an analyzer. The process follows the steps of: a) ascertaining by statistical analysis the ranges of values for R that are possible for three given concentration values C.sub.1, C.sub.2 and C.sub.3, for a given assay, and assigning a high value H and a low value L for these ranges; b) calculating for a given lot of the given assay, a calibration curve that correlates the analyzer response to the concentration, c) determining the analyzer response R.sub.1, R.sub.2 and R.sub.3 from said calibration curve, that corresponds to the C.sub.1, C.sub.2 and C.sub.3 values; d) calculating the bar code value B.sub.i for R.sub.i of each of these R.sub.1, R.sub.2 and R.sub.3 from the equation: B.sub.i =(10.sup.n -1)(R.sub.i -L.sub.i)/(H.sub.i -L.sub.i) (2) where R.sub.i is R.sub.1, R.sub.2 or R.sub.3, and L.sub.i and H.sub.i are the corresponding L and H values for that R.sub.i ; e) rounding B.sub.i to the nearest integer; and f) supplying this value of B.sub.i for each of R.sub.i =R.sub.1, R.sub.2 or R.sub.3 in bar code form, using n-digit decimal numbers, so that only three sets of (10.sup.n) possibilities are needed to accurately pass along data corresponding to the calibration coefficients even though each of the three coefficients can vary by more than that which can be specified using 10.sup.n digits.

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