Test strip for surface-enhanced raman spectroscopy, method for its praparation and use thereof

The present invention relates to a test strip for surface-enhanced Raman spectroscopy, which comprises a plastic substrate (B), to which a nitrocellulose membrane (C) is attached, the nitrocellulose membrane (C) comprising covalently anchored silver and/or gold nanoparticles (D), wherein the test strip further contains a sample part (A) with modified adhesion for an easy application of the sample and an absorption part (F) for absorbing the sample passed through the test strip, wherein the sample part (A), and the absorption part (E) are located at opposite ends of the test strip, and are adapted to freely transfer liquid (sample) from its application onto the sample part (A) until its absorption in the absorption part (E). The present invention further relates to a method for preparing the test strip and to the use thereof.