Find Out What Types of Clinical Studies Exist

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Learn All About Different Types of Clinical Studies

Clinical studies are conducted on human volunteers in order to research certain medical conditions. There are two kinds of clinical studies, so keep on reading this article if you want to learn more about the difference between them!

What Are the Types of Clinical Research Studies?

Medical experiments and observations performed on human participants are called clinical studies. The goal for clinical studies is to help improve medical knowledge that has to do with the diagnosis, treatment, and prevention of numerous conditions or diseases.

Two types of clinical studies are clinical trials (also known as interventional studies) and observational studies.

What Are Interventional Studies?

Clinical trials must include some sort of intervention conducted on participants. The interventions can be:

  1. Medical products—devices or drugs
  2. Participant behavior changes—diets, for example
  3. Procedures

Clinical trial investigators aim to ensure the safety of these interventions and see if they can be distributed among the general public. Usually, the researchers compare the medical approach being tested to another one that is already being used or to a placebo drug.

There are some clinical trials that focus only on the intervention tested without comparison to anything else. Interventional studies that test drugs are divided into clinical trial phases.

What Are Observational Studies?

Observational studies also involve health outcomes of research being done on volunteers. The main difference between them and interventional studies is that the investigators don’t instruct the participants in what interventions they should be involved in. They just observe certain groups of people to see how lifestyles affect certain conditions or diseases.

Why Participate in Different Types of Clinical Studies?

If you decide to participate in clinical studies, you will have to follow the protocol which is a research plan of the study. It includes certain information like eligibility criteria, the length of the study, the reason behind doing the study, and the number of volunteers needed.

Before enrolling in any kind of clinical study, you should always consult your doctor and evaluate the risks and benefits it could have. Some clinical studies are paid, and you can earn some decent cash while participating in them. Another benefit is that, if a clinical study is not in your vicinity, you will get to travel to another state.

By being part of a clinical trial, you can also find out about new treatments before they are available to the general public. That way, you might find the solution to your problem faster than anyone else in case you have a certain condition that the medication is being tested for.

The best part about volunteering in clinical studies is thinking about how much it will help medicine. Sacrificing a bit of your time can:

  • Make life easier for a multitude of patients
  • Help doctors treat them better
  • Assist researchers with finding a cure for some diseases that aren’t yet curable

Maybe a standard drug being used for a condition has many side effects, and finding a new one with better results can be done with your help!

Who Can Volunteer in Clinical Studies?

As there are different types of clinical studies—clinical trials and observational studies—they can also differ depending on what is being tested (a drug, device, treatment, etc.). All those factors require different types of candidates for the study.

Some studies pay healthy volunteers to participate, whereas others look for people who have diseases or conditions.

You can find the eligibility criteria for any clinical study in its protocol. With the help of your doctor and investigators from research centers, you should be able to find one that you fit well in.

People of all ages and medical conditions can participate in clinical studies—they just need to find the right one. The goal is for both you and the study to benefit from the collaboration.

How To Find Different Clinical Study Types With the Assistance of DoNotPay—The Easiest Way

Use DoNotPay to find clinical studies fast and without stress. To have your virtual assistant help you out, you will only need to:

  1. Open DoNotPay in your
  2. Select Clinical Trials
  3. Click on Get Started
  4. Set up the filters properly
  5. Pick a study you want to be a part of
  6. Select Contact

When you’re done, we will email the researchers for you and you can expect them to contact you within several days.

Use our real-time notification feature to keep track of new studies in your vicinity by alerting you when they emerge.

Our app is the only one that lets you sort your studies according to estimated distance, compensation, and date/time posted. You can also change your settings and preferences whenever you want.

What Are Some Alternative Ways of Finding Clinical Studies?

If you want to look for clinical studies on your own, you can try using one of these websites:


Trials Today

  • Find a suitable clinical trial by using a simple form
  • Choose from a variety of options


  • Find all the information you need in one place
  • Navigate the website effortlessly

Who Conducts Clinical Studies?

The research team involved in a clinical study consists of reliable doctors, nurses, social workers, and other relevant healthcare workers. A clinical study is led by a principal investigator who is a doctor in most cases. These people need to make sure everything is safe, follow the protocol and have the best possible results while being done properly.

Depending on who conducts a medical study, they can take place in different locations such as:

  • Hospitals
  • Universities
  • Doctors’ offices
  • Community clinics

These medical experiments and observations are usually funded by federal agencies such as the:

Often it’s some doctors, health care providers, voluntary groups, or pharmaceutical companies that sponsor clinical trials.

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