Altasciences
Research clinicCypress, CA
Up to $32,450top listing seen Oct 24, 2026
See paid studies (opens in a new tab)Research clinic
Parexel runs early-phase clinical units, including one in Baltimore, that focus on healthy participants and small patient groups. Its participant portal lists inpatient studies.
Pay info not verified
The participant portal didn’t load for our automated check, so pay visibility wasn’t confirmed.
See their paid studies (opens in a new tab)Advertised amounts are usually maximums. You may not qualify, may be kept as an alternate, or may receive less if you don’t complete every visit.
From the Money Guide · personal experience, 2024
The author’s rule of thumb (2024): look for roughly $400–$500 per inpatient day, with $7,000–$12,000 studies the “sweet spot.”
Study types
Link status: Working · checked Oct 23, 2026
Cypress, CA
Up to $32,450top listing seen Oct 24, 2026
See paid studies (opens in a new tab)Salt Lake City, UT · Lenexa, KS · San Antonio, TX
Up to $30,000top listing seen Oct 24, 2026
See paid studies (opens in a new tab)Baltimore, MD
Up to $26,300top listing seen Oct 24, 2026
See paid studies (opens in a new tab)