Research Volunteers Needed for Paid Inpatient Study ($2860) Clinical Research, Nationwide Clinical Research, Nationwide Study A+ A- Print Email Research Volunteers Needed for Paid Inpatient Study ($2860) Healthy users of prescription opioids such as OxyContin, Vicodin, Percocet, and Dilaudid (men and women, age 21-55 yrs) needed for a 6-7 week inpatient study of medication effects at the NY State Psychiatric Institute. Earn between $2510-$2860. More Studies Paid Online Study on Smartphones ($250) Paid Online/Phone Opinion Study ($250)