These companies operate Genetic, Genomic, and Sequencing diagnostic labs. Medical service professionals order diagnostic tests for patients, but the diagnostic services firms bill either the patient directly or through the patient''s insurance provider. Revenue is ultimately derived from commercial insurance providers, consumers as well as medicare and medicaid.

These companies provide contract clinical testing services to pharmaceutical and biotechnology companies. These services can be employed anywhere from early-stage to late-stage drug development. In the process of providing these testing services, the companies gain approval from relevant regulatory agencies.