Leja, a Dutch company founded in 1995, invented a special technique that involves screen-printing; with a resin containing spacers. By doing this, a chamber consists of defined chamber depth. All slides are covered with a special coating to prevent air bubble formation and to prevent sticking of the semen to the chamber surface. Both resin and ink are non-toxic.
The Leja slides have an excellent low limit of quantification and can handle high sperm concentrations. There is a direct clinical impact: you will be very well equipped to determine the thresholds for the various modalities of Assisted Reproduction Technologies (waiting for natural conception, IUI, IVF or ICSI) and in the decision which treatment is optimal for a couple.
The head of the IVF clinic of the Amsterdam University thought that semen analyses could be done better. He invented the concept behind the Leja slides.
Currently a lot of research to constantly improve our products is conducted by the R&D department as well as by many hospitals and institutes around the world.