Diversion programs typically use urine drug testing, most commonly a multi-panel immunoassay screen that checks for five or more substance categories at once. The exact panel and testing method vary by jurisdiction, but urine screening is the standard across pretrial diversion, drug court, and prosecutorial diversion programs. Some programs supplement urine tests with alcohol-specific monitoring, hair testing, or continuous wearable devices depending on the offense and the substances involved.
The Standard Urine Panel
The baseline for most diversion programs is a five-panel urine screen, which tests for amphetamines, cocaine, marijuana (THC), opiates, and PCP. Many programs have expanded to 10-panel or 12-panel screens that add benzodiazepines, barbiturates, methadone, and other categories. Whether your program uses a 5-panel or a broader screen depends on the court, the supervising agency, and the nature of your case.
These screens work through immunoassay technology, a rapid chemical reaction that flags a sample as positive or negative based on preset concentration thresholds. For example, the cutoff for amphetamines is typically 500 ng/mL, meaning anything below that concentration reads as negative even if trace amounts are present. Benzodiazepines have a lower cutoff around 200 ng/mL. Fentanyl, which has become increasingly relevant, can be detected at cutoffs as low as 1 ng/mL when it is specifically included in the panel.
The important thing to understand: fentanyl and newer synthetic substances like xylazine are not always included in standard panels. Traditional opiate screens were designed to detect morphine and codeine, not synthetic opioids. Programs dealing with populations at higher risk for fentanyl exposure are increasingly adding it as a separate line item, but this is not universal. If a standard panel doesn’t specifically test for fentanyl, it can easily be missed.
What Happens When a Screen Comes Back Positive
An initial immunoassay screen is a first pass, not a final answer. These tests are fast and inexpensive but can produce false positives. Certain cold medications can trigger a positive for amphetamines, and some foods (poppy seeds being the classic example) can flag for opiates.
When an initial screen is positive, the sample is sent for confirmation testing using gas chromatography-mass spectrometry (GC/MS), a far more precise method that identifies the exact substance and its concentration. Confirmation cutoffs are often different from screening cutoffs. Morphine, for instance, has a confirmation threshold around 200 ng/mL, while methamphetamine confirms at the same level. This two-step process protects against false accusations, so a single positive screen alone typically won’t result in sanctions.
How Long Substances Stay Detectable
Most substances of abuse show up in urine for roughly two to four days after use, but there are significant exceptions. Cocaine from a single use may only be detectable for about a day, while regular daily use extends that window to two or three days after stopping. Opioids like codeine and morphine generally clear within one to three days. Amphetamines and methamphetamine fall in the two-to-four-day range.
Marijuana is the major outlier. A single casual use is detectable for one to three days, but daily use extends the window to five to ten days. Chronic, heavy use can produce positive results for up to 30 days after the last use because THC stores in fat tissue and releases slowly. Benzodiazepines follow a similar pattern: a therapeutic dose clears in three to seven days, but long-term use can be detectable for up to 30 days.
Alcohol is on the opposite end of the spectrum. Standard urine tests only detect alcohol for 12 to 24 hours, which is why diversion programs that need to monitor drinking use specialized methods (covered below).
Alcohol-Specific Testing
Because alcohol leaves the body so quickly, programs that require sobriety from alcohol use a test called EtG (ethyl glucuronide). This measures a metabolic byproduct your liver creates when it processes alcohol, and it can detect drinking for up to five days depending on the cutoff level and how much was consumed.
Most commercial labs in the U.S. use a 500 ng/mL cutoff for EtG, which realistically only catches heavy drinking within the previous day. At that threshold, detection of both light and heavy drinking drops significantly after 24 hours. A lower cutoff of 100 ng/mL is far more sensitive, detecting 84% of heavy drinking episodes at one day and still catching 79% at five days. Programs that are serious about enforcing total abstinence from alcohol tend to use these lower cutoffs.
The 500 ng/mL threshold exists partly to avoid flagging incidental alcohol exposure from things like hand sanitizer or mouthwash, which can produce low-level EtG results. If your program uses the lower cutoff, you’ll want to be aware that non-beverage alcohol products could potentially cause a positive.
Continuous Alcohol Monitoring With SCRAM
For DUI-related or domestic violence diversion cases, some courts use a SCRAM bracelet, a tamper-resistant ankle monitor that continuously measures alcohol through your skin. Unlike a breathalyzer, which gives a single snapshot of blood alcohol content, the SCRAM device samples around the clock regardless of your location and sends alerts to your supervision officer if alcohol is detected.
SCRAM has been used in court programs since 2003 and is often ordered as a condition of pretrial release. It allows participants to remain in the community, keep driving, and maintain employment rather than sitting in jail. Courts view it as a cost-effective alternative to incarceration that still provides reliable monitoring. Other electronic monitoring options exist (GPS, home detention), but SCRAM is considered the most tamper-resistant continuous alcohol monitor commercially available.
Hair Follicle Testing
Some diversion programs use hair testing, though it serves a different purpose than urine screening. A standard 1.5-inch hair sample provides a detection window of approximately 90 days, compared to one to seven days for most substances in urine. This makes hair testing useful for establishing a longer-term pattern of use, particularly at the start of a program or as a periodic check.
Hair testing also has a practical advantage for the program: samples are collected in full view of the collector, which makes it nearly impossible to substitute or tamper with the specimen. Urine tests, by contrast, require stricter chain-of-custody procedures to prevent cheating. The trade-off is that hair tests are more expensive and don’t catch very recent use well, since it takes roughly a week for drug metabolites to grow out from the scalp into testable hair.
How Random Testing Works
Diversion programs rarely test on a fixed schedule. Most use a randomized system, often based on color codes. You’re assigned a color when you enter the program. Each day, typically after 5:00 p.m., you call a designated phone number or check a website to hear which color has been selected for the following day. If your color comes up, you report to the probation office or an approved collection site the next day to provide a sample.
This system means you can be called on any day, including Fridays and weekends. Your supervising officer can also direct you to test outside the random schedule at any time. The unpredictability is the point: it makes it extremely difficult to time drug use around known testing dates. Combined with the detection windows described above, random testing creates a situation where even occasional use carries a high risk of being caught.
Oral Fluid and Other Methods
Oral fluid (saliva) testing is used in some programs as a quick, observed collection method. Its detection window is shorter than urine, generally five to 48 hours depending on the substance, which limits its usefulness for catching use that happened more than a couple of days ago. Its main advantage is convenience and the difficulty of tampering, since the swab is placed directly in the participant’s mouth by the collector.
Some jurisdictions also use sweat patches, which are worn on the skin for a period of days or weeks and absorb drug metabolites as they’re excreted through sweat. These are less common but offer continuous passive monitoring similar in concept to the SCRAM bracelet for alcohol.