About this study.
Joined Bio is conducting a research study to track antibody levels in people receiving the Pfizer COVID-19 vaccine in August, 2026. If you’re already planning to get a COVID vaccine on your own this August, you may be eligible to participate.
Participation requires coming to Joined Bio’s office in Lexington, MA for four blood draws over four weeks, each collecting 25 mL (three tubes:
- One week before your COVID vaccine
- 1 to 4 days after your COVID vaccine
- 7-10 days after your COVID vaccine
- Two weeks after your COVID vaccine
Each visit takes just a few minutes. All draws are performed by trained staff at our Lexington office.
- 18 years or older
- Already planning to receive a Pfizer COVID-19 vaccine in August 2026, independent of this study
- Available for all four collection visits at our Lexington, MA office within the specified windows
- Generally be healthy and able to provide 25 mL of blood (3 tubes) each week
Participants who complete the full study receive $500 total, paid as follows:
- $50 after your first blood draw and proof of vaccine
- $50 after your second blood draw
- $50 after your third blood draw
- $350 after your fourth and final blood draw
Interested? Complete the survey below to see if you qualify.
Still have questions? Contact us at hello@joined.bio or 978-219-4496.
