FONAR Corporation, together with its subsidiaries, engages in the research, development, production, and marketing of magnetic resonance imaging (MRI) scanners for the detection and diagnosis of human diseases in the United States.

Burning Rock Biotech Limited primarily develops and provides cancer therapy selection tests in the People's Republic of China. It operates in three segments: Central Laboratory Business, In-Hospital Business, and Pharma Research and Development Services.

Sera Prognostics, Inc., a women's health diagnostic company, discovers, develops, and commercializes biomarker tests for improving pregnancy outcomes. The company develops PreTRM test, a blood-based biomarker test to predict the risk of spontaneous preterm birth in asymptomatic singleton pregnancies.

Psychemedics Corporation provides testing services for the detection of drugs of abuse through the analysis of hair samples in the United States, Brazil, and internationally.

DarioHealth Corp. operates as a digital therapeutics company in the United States, Canada, the European Union, Australia, and New Zealand. The company offers Dario's metabolic solutions to address metabolic health needs, such as diabetes, hypertension, and weight management; Dario Musculoskeletal, which helps to prevent and treat the most common MSK conditions; Dario's behavioral health solution that optimizes access to evidence-based care; chronic condition management solutions; DarioEngage, a proprietary care management platform; and device-specific disposables test strip cartridges, lancets, and blood glucose monitoring systems.

Castle Biosciences, Inc., a commercial-stage diagnostics company, focuses to provide diagnostic and prognostic testing services for dermatological cancers. Its lead product is DecisionDx-Melanoma, a multi-gene expression profile (GEP) test to identify the risk of metastasis for patients diagnosed with invasive cutaneous melanoma.

Exagen Inc. develops and commercializes various testing products based on its cell-bound complement activation products technology under the AVISE brand in the United States.

Biodesix, Inc. operates as a data-driven diagnostic solutions company in the United States. The company offers blood-based lung tests, including Nodify XL2 and Nodify CDT tests, together marketed as part of Nodify Lung Nodule Risk Assessment testing strategy, to assess the risk of lung cancer and help in identifying the appropriate treatment pathway and help physicians in reclassifying risk of malignancy in patients with suspicious lung nodules.

Neuronetics, Inc., a commercial stage medical technology company, designs, develops, and markets products for patients with neurohealth disorders in the United States and internationally.

Sotera Health Company provides sterilization, and lab testing and advisory services in the United States, Canada, Europe, and internationally. The company's sterilization services include gamma and electron beam irradiation, and EO processing; Nelson Labs comprise microbiological and analytical chemistry testing; and advisory services for medical device and biopharmaceutical industries.