--- title: Phase IV / Post-Marketing CROs in United States path: /services/phase-4-post-marketing/us companies_count: 34 --- # Phase IV / Post-Marketing CROs in United States 34 published CROs match Phase IV / Post-Marketing in United States. Locations in this set include United States, United Kingdom, India, Australia, China, and Canada. Capabilities that show up most often in this set: Small Molecule, Biologics (Other), Gene Therapy, Vaccine, and Cell Therapy. ## Matching companies - [Altasciences](/companies/altasciences) - Mid-size early phase CRO/CDMO in Canada and the U.S. offering preclinical safety testing, clinical pharmacology (Phase I–II), bioanalysis, research services, and manufacturing with integrated capabilities. - [Amador Bioscience](/companies/amadorbioscience) - Amador Bioscience provides bioanalysis and biomarker services, including LCMS, immunoassays, flow cytometry, and immunogenicity testing, alongside clinical pharmacology modeling and regulatory affairs support. Its labs are GLP compliant, and its teams work across the US, China, and Europe. - [CTI Clinical Trial and Consulting Services](/companies/ctifacts) - Full-service CRO founded in 1999 providing therapeutic expertise across clinical trial and consulting services to pharmaceutical and biotechnology companies. - [Celerion](/companies/celerion) - Global CRO specializing in early-phase clinical research and bioanalytical sciences with 650+ beds across 30 countries and 50+ years of experience. - [Certara](/companies/certara) - Certara transforms drug development with proprietary biosimulation software, predictive modeling, and AI-driven services spanning discovery through commercialization. Serving 2,400+ biopharmaceutical companies and regulatory agencies across 70 countries, Certara's model-informed drug development (MIDD) platform accelerates clinical and regulatory decision-making. - [Clinilabs](/companies/clinilabs) - Clinilabs is the leading CNS-focused CRO with 25+ years of expertise in neurotherapeutic clinical trials, offering Phase 1–4 trial management, early-phase development, clinical research units, and MedTech device expertise across psychiatry, neurology, substance use, and rare CNS disorders. - [ERGOMED Group](/companies/ergomed) - Global, full-service CRO specializing in oncology and rare disease clinical development, with complementary pharmacovigilance and QA consulting brands. - [Emerald Clinical](/companies/emeraldclinical) - Global clinical research organization with 25+ years of expertise, headquartered in Singapore with operations across Asia-Pacific, EMEA, and the Americas. Specializes in renal, oncology, cardiovascular, and early-phase research with deep scientific leadership and proven operational excellence. - [Ergomed Clinical Research](/companies/medsource) - Ergomed is a specialized CRO with 25+ years of experience delivering oncology, rare disease, and complex clinical trial solutions across all phases globally, backed by a team of 100+ MDs and PhDs. - [ExperTrials](/companies/expertrials) - European-based full-service CRO supporting biotech and medtech companies from Phase I through Phase IV and market access, with 80+ senior clinical research associates across Europe and the USA. - [Fortrea](/companies/fortrea) - Fortrea is a leading CRO advancing clinical trials through patient-focused clinical solutions that accelerate clinical development and drive trial success. - [ICON plc](/companies/iconplc) - ICON is a global clinical research organization providing full-service drug development and clinical trial solutions across early phase through post-marketing, including clinical operations, bioanalytical labs, cardiac safety, medical imaging, and regulatory affairs. - [Innovate Research](/companies/innovate-research) - Indian CRO providing end-to-end clinical trial services (Phase I–IV), regulatory support, medical writing, biostatistics, data management, and biospecimen procurement across pharmaceuticals, biologics, medical devices, and nutraceuticals. - [JSS Medical Research](/companies/jssresearch) - Full-service CRO with over 30 years of experience offering clinical trials, biostatistics, medical writing, and health economics services across all phases of development. - [Lotus Clinical Research](/companies/lotuscr) - Specialized CRO supporting clinical development in neuroscience and metabolic disease across all phases, with direct access to 20 wholly-owned US research sites and 400+ beds. - [Medpace](/companies/medpace) - Full-service CRO with 30+ years of organic growth, offering integrated clinical development services across all phases with wholly-owned central labs, bioanalytical lab, imaging core lab, and Phase I unit. - [ObvioHealth](/companies/obviohealth) - ObvioHealth delivers decentralized and hybrid clinical trial solutions through its ObvioGo platform, enabling sponsors to simplify study design, boost participant engagement, and accelerate enrollment across 40 countries. - [PCM Trials](/companies/pcmtrials) - World's largest independent, community-based clinical trial site network offering decentralized and mobile research services across diverse patient populations globally. - [PPD](/companies/ppd) - PPD is a leading global contract research organization (CRO) and the clinical research business of Thermo Fisher Scientific. - [Perceptive](/companies/perceptive) - Leading clinical research organization providing preclinical to late-phase imaging, randomization and trial supply management (RTSM), and eClinical services to the global biopharmaceutical industry.