The test strip system for analysing a constituent of a body fluid comprises test strips (2), code strips (3) and an evaluation device (4). …<??>The test layers (5) of the test strip (2) contain reagents which react with the sample to produce a colour change in a detection layer which is characteristic for the analysis. The code strips (3) contain an evaluation code in a machine-readable form with an evaluation curve required for analysis of the test strips. The evaluation device (4) has a measuring device, a code-reading device and evaluation electronics. …<??>Possible operation errors are eliminated virtually without any additional outlay by a single code reader being positioned with two reading units which are mutually offset both laterally and in the reading direction on an insertion path (28) which is common to the test strips (2) and the code strips (3), the test strips (2) having a batch-specific identification code in the form of continuous lines, the evaluation code being configured on the code strips (3) as a two-track code and containing a batch identification and the evaluation device (4) being provided with a comparator unit for checking the allocation of the batch of the particular test strip (2) to be analysed and of the stored evaluation information. …<IMAGE>…
