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Phase I information

What are Phase I clinical trials?

Phase I clinical trials are the first stage of testing a new drug or treatment in humans. These trials primarily focus on assessing the safety, tolerability, and optimal dosage of a drug, usually involving a small group of healthy volunteers or patients. Researchers monitor participants closely for side effects and how the body processes the drug. The results help determine whether the treatment is safe enough to proceed to later phases of clinical research.

What are the key skills and qualifications needed to thrive as a Phase I Clinical Research Associate, and why are they important?

To thrive as a Phase I Clinical Research Associate, you need a solid understanding of clinical trial protocols, regulatory requirements, and data collection, typically supported by a degree in life sciences or nursing. Familiarity with clinical trial management systems, electronic data capture tools, and knowledge of Good Clinical Practice (GCP) certification are commonly expected. Attention to detail, strong organizational skills, and effective communication abilities help you excel in managing complex studies and collaborating with cross-functional teams. These competencies ensure the integrity of early-phase trials, patient safety, and compliance with regulatory standards.

What are some common challenges faced by professionals working in Phase I clinical trials?

Professionals in Phase I clinical trials often encounter challenges such as recruiting suitable healthy volunteers or patients, ensuring strict adherence to regulatory and ethical guidelines, and managing unexpected adverse events. The fast-paced environment requires strong attention to detail, excellent communication within multidisciplinary teams, and adaptability to rapidly changing study protocols. Collaboration with clinical staff, regulatory authorities, and data management teams is essential for the successful and safe execution of early-stage trials.

What is the difference between Phase I vs Phase II?

AspectPhase IPhase II
PurposeInitial assessment of safety and dosageExpanded safety, efficacy, and side effects
ScopeSmall group of healthy volunteers or patientsLarge patient population
DurationSeveral monthsSeveral months to years
CredentialsClinicians, researchers, regulatory approvalSame as Phase I, with additional data analysis

Phase I focuses on safety and dosage in a small group, while Phase II expands to evaluate effectiveness and side effects in a larger group. Both phases require similar credentials and are essential steps in clinical research, but they differ in scope and objectives.

What cities are hiring for Phase I jobs? Cities with the most Phase I job openings:
What job categories do people searching Phase I jobs look for? The top searched job categories for Phase I jobs are:
Phase I jobs near you
Infographic showing various Phase I job openings in the United States as of July 2026, with employment types broken down into 1% As Needed, 81% Full Time, 16% Part Time, and 2% Contract. Highlights an 97% Physical, 1% Hybrid, and 2% Remote job distribution.
Environmental Field Subconsultant (Phase I ESA / PCA) SoCal

Environmental Field Subconsultant (Phase I ESA / PCA) SoCal

Blew & Associates, P.A.

San Jose, CA • On-site

$22 - $29.25/hr

Contractor

Re-posted 4 days ago

Job description

We are expanding our network of skilled Field Professionals to support Phase I Environmental Site Assessments (ESA) and Property Condition Assessments (PCA). This is a subcontractor opportunity within the commercial real estate due diligence industry, working alongside our full-time team on projects across the United States.

As part of our approved Subconsultant Network, you will conduct onsite property inspections ("walk") and prepare professional reports ("write") in accordance with ASTM and industry standards. This role is ideal for experienced assessors seeking flexible, project-based work with a reputable national firm.

Requirements

  • Required Qualifications
    • Ability to travel to job sites to perform field inspections.
    • Minimum 2 years of experience conducting Phase I ESA and/or PCA assessments.
    • Strong technical writing skills and ability to complete full reports independently.
    • Ability to manage multiple projects and meet established deadlines.
    • Familiarity with industry standards (ASTM for ESA, or PCA guidelines).
  • Preferred / Excellent to have
    • Experience using Quire or similar reporting platforms.
    • Bachelor's degree in Environmental Science, Engineering, Architecture, or related field (not required).
    • Professional credentials such as CEP, RA, PE, or similar (beneficial, not required).
    • Radon or AHERA (Asbestos) certifications.
    • Experience with Fannie Mae / Freddie Mac or HUD scope projects.

Benefits

  • Potential for future full-time employment and other career growth oppurtunites.
  • Competitive Pay
  • Flexible work hours

Apply