If you’re thinking about taking part in clinical trials, you might be wondering what actually happens when you first visit a research site. The screening visit is your first proper appointment, and it helps the study team work out if a trial is right for you.
This guide explains everything you need to know about the clinical trial screening process, so you can feel prepared and confident.
What Is a Screening Visit?
A screening visit is a health check-up that happens before you officially participate in a clinical trial. The study team uses this appointment to:
- Check your overall health
- Review your medical history
- Make sure you meet the requirements for the specific research study
- Answer any questions you have
Think of it like a detailed check-up at your GP, but specifically designed to see if you’re a good match for the trial.
Before Your Screening Visit: The Pre-Screening Stage
Before you arrive for your screening appointment, the research team will usually speak with you over the phone first. This is called pre-screening. During this call, they’ll ask some basic questions about your health conditions to see if you might be suitable for the trial.
If you seem like a good fit, they’ll invite you to attend a screening visit at the research site. At 4MCS, screening appointments take place at their dedicated clinical research facility in Ilford.
What Happens During Clinical Trial Screening?
Every research study is different, so the exact tests will depend on what condition the trial is investigating. However, most screening visits include similar steps.
Step 1: Reading and Signing the Informed Consent Form
When you arrive, a member of the study team will give you an informed consent form. This document explains:
- What the research study is about
- What will happen during the trial
- How long the study lasts
- Any possible side effects or risks
- Your rights as one of the clinical trial participants
Take your time to read this carefully. You can ask as many questions as you like before deciding whether to sign. Signing the form means you understand the study and agree to participate in the trial, but you can still leave the trial at any time if you change your mind.
Step 2: Medical History Review
A research coordinator will ask you questions about your health background. This usually includes:
- Past and current health conditions
- Any medications you’re taking
- Allergies you have
- Previous surgeries or hospital stays
- Your family’s medical history
Be honest and thorough with your answers. This information helps the team keep you safe throughout the study.
Step 3: Physical Examination
You’ll have a physical examination with a doctor or nurse. This might include checking your:
- Height and weight
- Blood pressure
- Heart rate
- Temperature
- General physical health
Step 4: Laboratory Tests and Diagnostic Testing
Depending on the trial, you may need to provide samples or have additional tests. Common laboratory tests include:
| Test Type | What It Involves |
|---|---|
| Blood test | A small sample of blood taken from your arm to check various health markers |
| Urine test | Providing a urine sample in a container |
| ECG (electrocardiogram) | Stickers placed on your chest to check your heart rhythm |
| Medical questionnaires | Answering questions about your symptoms or wellbeing |
Some trials, including those for specific health conditions, may require additional diagnostic testing like scans or more detailed assessments. The study team will explain exactly what’s needed before your visit.
Step 5: Meeting the Study Team
During your screening visit, you’ll meet the people who will look after you throughout the trial. This includes clinical trial coordinators and the principal investigator (the doctor leading the research study). They’re there to answer your questions and make sure you feel comfortable.
How Long Does the Screening Process Take?
Most screening visits last between two and four hours, though this can vary. Studies that need more laboratory tests might take longer. The research team will let you know roughly how much time to set aside when they book your appointment.
What Should I Bring?
It’s helpful to bring:
- A valid photo ID (like a passport or driving licence)
- A list of any medications you’re currently taking
- Details of your GP surgery
- Any relevant medical records or letters
Will I Definitely Be Accepted?
Not everyone who attends a screening visit will be accepted onto a trial. Each study has specific eligibility criteria that clinical trial participants must meet. These requirements exist to keep participants safe and make sure the research results are reliable.
If you don’t qualify for one study, don’t be discouraged. You may be suitable for a different trial. Many research sites, including 4MCS, run multiple studies at any time, so there may be other opportunities available.
What Happens After the Clinical Trial Screening?
After your screening visit, the study team will review your results. If you meet all the eligibility criteria and you’ve signed the informed consent form, you’ll move on to the next stage of the trial.
This is when you’ll start receiving the investigational treatment and attending regular follow-up visits. Throughout the clinical research process, the team will monitor your health and wellbeing closely, watching for any side effects and making sure you’re comfortable.
Your Rights as a Participant
It’s important to know that taking part in clinical trials is completely voluntary. You have the right to:
- Ask questions at any time
- Take as long as you need to decide whether to participate in a clinical trial
- Leave the trial at any point, without giving a reason
- Receive information about the trial results when available
All clinical trials in the UK must be approved by the Medicines and Healthcare products Regulatory Agency (MHRA) and an independent research ethics committee. These bodies exist to protect participants and ensure clinical research is conducted safely and ethically.
For more detailed information about how clinical trials work in the UK, you can visit the NHS clinical trials guide.
Ready to Find Out More?
If you’re interested in taking part in clinical research, the first step is to register your interest with a research site. They’ll discuss current studies with you and help you understand what’s involved.
Clinical trials play a vital role in developing new treatments and improving healthcare for everyone. By choosing to participate in a clinical trial, you could be helping to shape the future of medicine.
