--- title: Phase I Clinical Trials CROs in United States path: /services/phase-1-clinical-trials/us companies_count: 40 --- # Phase I Clinical Trials CROs in United States 40 published CROs match Phase I Clinical Trials in United States. Locations in this set include United States, United Kingdom, India, France, Australia, and Germany. Capabilities that show up most often in this set: Small Molecule, Biologics (Other), Gene Therapy, Vaccine, and Biologics (Monoclonal Antibodies). ## Matching companies - [Aliri Bioanalysis](/companies/aliribio) - Bioanalytical CRO specializing in PK/PD, biomarker, and spatial imaging services across discovery through Phase 3 clinical trials, with 20+ years of regulatory expertise. - [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. - [Biotrial](/companies/biotrial) - Biotrial is a leading CRO specializing in early-phase clinical development with 260 beds across Phase I units in France and the USA, offering First-in-Human studies, Proof-of-Concept trials, bioanalysis, biometrics, ECG, and CNS & imaging core lab services. - [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. - [Champions Oncology](/companies/championsoncology) - Leading oncology CRO specializing in preclinical and clinical specialty testing, with over 1,400 patient-derived xenograft models, comprehensive multi-omic datasets, and proprietary platforms including flow cytometry, NGS, proteomics, and histopathology services. - [Clarenta](/companies/comac-medical) - Clarenta (formerly Comac Medical Group) is a pan-European CRO offering full-service trial delivery and early-phase studies, including first-in-human and PK work. It runs a Phase I unit in Sofia and has depth in oncology and rare diseases. - [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. - [Cognitive Research Corporation](/companies/cognitive-research-corporation-crc) - Exclusively focused CNS contract research organization running Phase I-III neuroscience trials, with driving simulation for assessing how medications affect driving safety. Offers clinical trial management, trial design, data management, biostatistics, and medical writing to sponsors. - [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. - [Lindus Health](/companies/lindus-health) - Lindus Health is a clinical research organization delivering end-to-end trial execution across Phase 1–2a programs with proprietary AI-driven patient recruitment, integrated site networks, and performance-based pricing. The company has completed 45+ trials with 82% on-time enrollment and operates across the US, UK, and Europe. - [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.