---
kind: "section"
citation: "28 C.F.R. § 550.31"
title: "28"
number: "550.31"
heading: "Procedures."
url: "https://uscodex.org/cfr/28/550.31"
---

# §550.31. Procedures.

- (a) Staff of the same sex as the inmate tested shall directly supervise the giving of the urine sample. If an inmate is unwilling to provide a urine sample within two hours of a request for it, staff ordinarily shall file an incident report. No waiting period or extra time need be allowed for an inmate who directly and specifically refuses to provide a urine sample. To eliminate the possibility of diluted or adulterated samples, staff shall keep the inmate under direct visual supervision during this two-hour period, or until a complete sample is furnished. To assist the inmate in giving the sample, staff shall offer the inmate eight ounces of water at the beginning of the two-hour time period. An inmate is presumed to be unwilling if the inmate fails to provide a urine sample within the allotted time period. An inmate may rebut this presumption during the disciplinary process.
- (b) Institution staff shall determine whether a justifiable reason exists, (e.g., use of prescribed medication) for any positive urine test result. If the inmate's urine test shows a positive test result for the presence of drugs which cannot be justified, staff shall file an incident report.

## Notes

### Source

Source: 62 FR 45292, Aug. 26, 1997, unless otherwise noted.

### Authority

Authority: 5 U.S.C. 301; 18 U.S.C. 3521-3528, 3621, 3622, 3624, 4001, 4042, 4046, 4081, 4082 (Repealed in part as to offenses committed on or after November 1, 1987), 5006-5024 (Repealed October 12, 1984 as to offenses committed after that date), 5039; 21 U.S.C. 848; 28 U.S.C. 509, 510; Title V, Pub. L. 91-452, 84 Stat. 933 (18 U.S.C. Chapter 223).