Method for detection and compensation of the underdosage of test strips

The invention relates to a method for detecting a lower dosage of an analytical test element and optionally to compensate the under-dosing. Furthermore, the invention relates to an analytical system and a test element, which are suitable for recognizing an underdosing. By irradiating the analytical test element in a control wavelength range underdosing of the test element can be reliably detected and possibly charged. For this purpose the test element includes a control substance that interacts depending on the contact with the discontinued Sample volume with the radiation in the control wavelength range.