Learn how to use this product LymphoPrime, Complete Karyotyping Medium for Peripheral Blood Lymphocytes, is a ready-to-use medium for cultivating peripheral blood lymphocytes for chromosome evaluation. The LymphoPrime formulation contains L-glutamine, pre-tested fetal bovine serum, phytohemagglutinin-M (PHA-M), and antibiotics. It is supplied as a frozen medium and ready for use after thawing. LymphoPrime can be an excellent alternative to products like BIO-PBâ„¢ Karyotyping Medium (BIO-PBâ„¢ is a registered trademark of the Sartorius Group).