A Phase III, Randomized, Double-Blind, Placebo-Controlled Study to Confirm the Authenticity of Point-of-Care Urine Samples Using Oral Fluorescein Sodium in Adults Ages 18-65 with Substance Use Disorder (the ATTESTED Study)
The study will involve a total of 2 visits to our clinic (located in Guelph, Ontario) and 1 phone call visit over a 1 month period. If you complete the study in its entirety, compensation will be $200 for your time and travel to the clinic.
The purpose of this study is to determine the sensitivity and specificity of the assay methodology in correctly attributing urine samples to the active and control group.
Only a limited amount of spots available.
You may be eligible if you are:
Between 18 to 65 years old
Have a substance use disorder (past or present)
Able to attend 2 visits and 1 phone call visit

Willing to follow all restrictions throughout the study

Willing to follow contraceptive requirements
Point of Care Urine Testing Study
Participation will include:- 2 visits to our clinic (located in Guelph, Ontario) and 1 phone call visit
- Oral consumption of study product (liquid formulation)
- Multiple urine samples
- 1 blood draw
How it works:
Facility Features
We take pride in our bright, modern clinic that we continue to upgrade to ensure a comfortable clinical trial experience for you. Click here to take a virtual tour of our space.

Free wifi available throughout facility

Accessible facility

Private rooms available for calls

Certified, experienced and friendly staff

Comfortable seating options

24/7 access to staff
The Team Behind the Scenes
At Apex Trials, your safety is our top priority. Our team of qualified staff are here to ensure everything runs smoothly.




