Conventional laboratory tests require calibration before each test. This results in the need for a reagent for calibration before each test. Additionally, calibration takes a long time, and the total TAT (Turn Around Time) of a testing system increases. The testing system thus suffers from the difficulty of improving the testing efficiency. This invention, which has been made to solve the problem, provides a testing element for performing a laboratory test, wherein the testing element includes an information recording section at the surface of and/or inside the testing element, and the information recording section stores information on a characteristic of the testing element.