MKL Diagnostics MKL Diagnostics is a Swedish biotech company in the MIKROLAB GROUP dedicated to clinical and industrial microbiology. Main products for MKL Diagnostics are the well known Phadebact® kits which are a range of products based on the co-agglutination technology. MKL Diagnostics has a large scale production of microbiological substrates. The product range of solid and liquid media for transport or cultivation of bacteria, encompassing more than 400 items.