Sample quality is very important for obtaining reliable geotechnical parameters, especially because the reliability design method has been recently introduced into geotechnical engineering (for example, Eurocode 7). The sample quality is usually assessed by comparing the values of strength, Young's modulus and strain at failure from unconfined compression test as well as the values of pre-consolidation pressure, compression index, and volumetric strain at in situ stresses from oedometer test. However, since the assessment criteria are based on past experience, the above conventional methods should be examined carefully in order to explain whether they can or cannot be applied to the layers tested. In addition, it should be noted that they are destructive, i.e., after assessing the specimen quality, it is cannot be used for testing anymore. In this paper, the possibility of assessing a sample quality by suction (p'r) and shear wave velocity (vv) is examined.