Current Studies

Grayline Research Center is currently conducting the following studies in Wichita Falls, Texas.

If you would like to learn more and determine your participation eligibility, please call 940-322-1131.


Click here to let us know you’re interested in participating in a study.

Major Depressive Disorder (MDD)

Although there are treatments available for your major depressive disorder (MDD), you haven’t found on that consistently manages your depressive symptoms.

As you continue to experience these symptoms and depressive episodes, you may be considering additional options for your MDD.

Who is eligible to participate in this study?

To pre-qualify for this study, you must:

  • Be 18 to 65 years of age
  • Have been diagnosed with MDD, or are currently experiencing a depressive episode


Hypertension (HTN)

If you have hypertension, it means that you have high blood
pressure. If left untreated, hypertension can increase the risk of
several other health problems, including heart attack and stroke.

The KARDIA-2 research study is for people who are:
• Not taking antihypertensive medications (blood pressure
medications) and have a systolic blood pressure between
155 and 180 mm Hg
• Taking antihypertensive medications and have a systolic
blood pressure between 145 and 180 mm Hg

Age Requirement: 18-75 years old


Fill out the form below to have us contact you about screening for this study:

Treatment-Resistant Depression (TRD)

If you’ve tried different medications, but nothing helps regularly relieve your symptoms, your daily life may become a draining experience that feels like it keeps getting worse.

Because you and others continue to experience the effects of Treatment-Resistant Depression (TRD), we are conducting a clinical research study evaluating an investigational nasal spray medication and its effectiveness and usefulness when given to people with TRD.

Are you eligible?

You may be able to participate in this study if you:

  • Are 18 years of age or older
  • Have been diagnosed with Major Depressive Disorder (MDD)
  • Have not adequately responded to at least 2 different antidepressant treatments

PTSD Study

If you’ve experienced or witnessed a traumatic event and now have unwanted memories of the event, struggle with fear and anxiety, feel isolated from family and friends; or avoid situations that remind you of the trauma, you may have post-traumatic stress disorder (PTSD). 

While there are medications for PTSD, they don’t treat all of the symptoms and only affect severity of some symptoms instead of reducing symptoms overall. If this sounds like you, consider joining one of Grayline’s current PTSD studies.

To pre-qualify for a PTSD study, you must:

  • Be 18 to 65 years of age
  • Have experienced the traumatic event at least 3 months before the beginning of the study
  • Experience PTSD symptoms including but not limited to: Nightmares; Flashbacks; Avoiding thoughts, places or feelings; Easily Startled, tense, “on edge”, etc.


Alzheimer’s Disease

Alzheimer’s disease (AD) targets the brain and can affect memory, thinking, judgement, and behavior. Symptoms eventually grow severe enough to interfere with daily tasks. There are more than six million Americans living with Alzheimer’s, and that number is projected to rise to nearly 13 million by 2050.

Grayline Research Center is currently enrolling patients in Alzheimer’s disease studies aim at slowing the progression of mild-to-moderate AD, and also designed to boost a repair and regenerative pathway for brain cells, promoting brain health function.

To be considered for one of our Alzheimer’s research studies, patients must:

  • Be ages 50 to 87 years old
  • Be diagnosed with, or have a suspected clinical diagnosis of, Alzheimer’s disease
  • Have a family member or loved one who can be available as a study partner during the entire study

For more information and to see if you or your loved one pre-qualifies call us anytime! 940-322-1131

Social Anxiety

Why is this study being conducted?
Because currently approved therapies for social anxiety are not always ideal for every individual and sometimes have undesirable side effects, scientists continue to research drugs for individuals with social anxiety. Pharmaceutical companies use clinical studies like this one to learn more about investigational drugs before they are made available to the public.

This study is testing an investigational drug called cannabidiol (CBD) for adults with social anxiety who are between the ages of 18 and 75 years old. Doctors will compare CBD to a placebo to find out how well it works and how safe it is in individuals with social anxiety. A placebo is a substance that looks like the investigational drug but has no active drug in it.

What will happen in this study?
If you are eligible to enroll in the study, you will be randomly assigned to 1 of 3 treatment groups to receive either CBD or a placebo, given as an oral solution. Group assignment is done randomly (by chance; like drawing straws) by a computer. Neither you, nor the research doctor or coordinator, will know which treatment group you are in or whether you are receiving the investigational drug or the placebo. You will be in the study for approximately 16 weeks, and you will need to come to the clinic 9 times over this period.

Who is eligible to participate in this study?
To be eligible, you must be:
• 18 to 75 years old
• Experiencing social anxiety
• Able to give informed consent

Free Memory Screens

Grayline Research Center Offers Free Confidential Memory Evaluations!

Memory loss can disrupt your daily life and may be a symptom of Alzheimer’s disease or other dementia. Are you or a loved one feeling concerned about memory loss?

Grayline Research Center is proud to offer free confidential memory screens for individuals who have concerns about their memory or want to check their memory now for future comparison.
All memory screens are performed by staff who are trained in identifying problems with memory or thinking. The screening is non-invasive, consists of a series of questions and tasks, and takes around 30 minutes to administer.

Memory screenings are used as an indicator of whether a person might benefit from an extensive medical exam, but they are not used to diagnose any illness and in no way replace an exam by a qualified healthcare professional. We encourage medical follow up.

Our Goals are Simple:

  1. Provide free, confidential memory screenings to those with memory concerns or want to check their memory
  2. Eliminate stigma and fears associated with dementia
  3. Encourage those with memory problems to follow up with an exam by a physician or other qualified healthcare professional for an accurate diagnosis, treatment, social services, and community resources
  4. Educate the public about Alzheimer’s disease and successful aging
  5. Alleviate the fears of those who do not have a problem


*Because we are screening for memory concerns, we recommend you attend the Free Memory Screen with a trusted individual. If you are scheduling a memory screen appointment for someone other than yourself, please indicate this when you call to schedule an appointment.


Depression with Sleep Problems

The purpose of this clinical research study is to determine the safety and effectiveness of an investigational medicine being evaluated in people who have depression with sleep problems.

You may be able to participate in this study if you:

  • are 18-74 years of age
  • have been diagnosed with depression
  • have taken antidepressants in the past that did not work well for you
  • are currently taking an antidepressant medication but still have symptoms of depression
  • have difficulty falling asleep or staying asleep, or do not feel rested the next day

Simply call us or fill out the form provided to learn more or schedule your eligibility appointment!