Featured graphic: EtG testing in Indiana — probation, OWI and problem-solving courts, and family court

How EtG testing works in Indiana

Ethyl glucuronide (EtG) is a direct metabolite of alcohol found in urine after drinking. Courts and supervision officers use it because it answers one question: has this person consumed alcohol since the last check-in? Breath tests catch only very recent use and standard drug panels do not detect alcohol, so when abstinence is ordered, EtG fills the gap.

Testing in Indiana is court- and program-driven, not statewide: probation is supervised locally, county by county; parole is supervised by the Indiana Department of Correction; problem-solving courts run locally under the Indiana Supreme Court's Office of Court Services. Conditions vary by offense, county, court, and program.

Indiana probation testing often runs through a daily color-code call-in system: the probationer calls a designated line each day, and if their assigned color is announced, they report for a test the next day. Urine analysis is the most common method, and labs run a creatinine check, so an abnormally low level — for example from drinking excessive water to dilute the sample — can mean a failed or rejected test.

The ignition interlock is a breath device fitted to a vehicle, not an EtG test; a person can be subject to both.

Who gets tested in Indiana and why

Probation

Probation is where most Indiana alcohol and drug testing happens. Under IC 35-38-2-2.3, a court may require a probationer to periodically undergo laboratory chemical tests; the probationer pays, and the lab reports results directly to the probation officer. A positive result is typically reported to the probation department within 72 hours. Under IC 35-38-2-3, if the court finds a violation, the judge may modify the conditions, extend the probationary period by up to one year, or revoke probation.

Pretrial bond in OWI cases

Testing often starts before conviction: a judge setting bond in an OWI case may require abstinence and random testing while the case is pending. Methods vary by court and county — breath tests, portable breath devices, transdermal ankle monitors (SCRAM), and EtG urine tests reaching back roughly 72 hours — and EtG is the method that catches drinking between breath checks.

OWI

Indiana does not use the term DUI: the offense is operating while intoxicated (OWI), under IC 9-30-5. The statute creates two BAC tiers. A BAC of 0.08% to under 0.15% is a Class C misdemeanor, punishable by up to 60 days in jail and a fine of up to $500. A BAC of 0.15% or higher is a Class A misdemeanor, punishable by up to one year in jail and a fine of up to $5,000. A separate provision, IC 9-30-5-2, criminalizes operating a vehicle while intoxicated regardless of BAC — a Class C misdemeanor, rising to a Class A misdemeanor if the driving endangered another person. A repeat OWI within seven years is a Level 6 felony (six months to two and a half years, up to $10,000), as is an OWI with a passenger under 18 when the BAC is 0.15% or higher or the driving endangered someone. IC 9-30-5-15 adds minimum jail or community-service terms for repeat offenders, together with an alcohol and drug assessment. Causing death or catastrophic injury is a Level 4 felony (two to twelve years). Drivers under 21 face a lower threshold of 0.02% (IC 9-30-5-8.5).

Problem-solving courts

Indiana's alternative to jail for high-risk repeat offenders is its problem-solving courts, built around treatment, frequent testing, and close judicial supervision. The first two opened in 1996, in Vigo County and the city of Gary; by December 2025 Indiana had nearly 160 problem-solving courts in 61 of 92 counties, certified by the Indiana Supreme Court's Office of Court Services under IC 33-23-16. The models include adult drug courts, OVWI courts, family recovery courts, veterans courts, reentry courts, and mental health courts. Participants face regular drug testing, treatment, and frequent court reviews; progress eases the requirements, and violations tighten them. Funding pressure is real: in 2026, Marion County's reentry and drug court stopped accepting new applicants after the Indiana Department of Correction cut a roughly $600,000 grant supporting those courts.

Parole

Release from an Indiana Department of Correction facility is followed by parole supervision under the Indiana Parole Board. Under IC 11-13-3-4, the board may require a parolee to periodically undergo laboratory chemical tests, with results reported to the board; the parolee pays, but parole may not be revoked solely because the person cannot pay. The board may also require addiction counseling, inpatient detoxification, case management, and medication-assisted treatment. The board's special stipulations can include a ban on alcohol and illegal substances, a substance abuse evaluation with all recommendations followed, and a ban on frequenting establishments whose main business is selling or serving alcohol. A failed test is a technical violation that can lead to increased supervision, referral to treatment, or revocation proceedings.

Family court

In custody and parenting-time cases, Indiana courts decide on the child's best interests under IC 31-17-2-8, and the mental and physical health of everyone involved is a factor the court must consider — so a parent's alcohol use that bears on parenting capacity or the child's safety can be weighed. When use is raised, the court may require drug testing before parenting time under IC 31-17-2-21.8, and under IC 31-17-4-1 it can order treatment or supervised visitation where parenting time would endanger the child's physical health or significantly impair emotional development. In child-welfare (CHINS) cases, the Department of Child Services refers for substance-use assessment and testing, obtaining the parent's consent or a court order. Indiana has no general standalone alcohol-testing statute for custody cases: testing follows a request and a reason, and a positive result is one factor among many.

License reinstatement

Getting a license back after an Indiana OWI runs on two independent tracks: the BMV's administrative process and the court process. Under IC 9-30-6-9, a certified test at 0.08% or higher brings a 180-day BMV suspension, or until the charges are disposed of; refusing the test brings one year, or two years with a prior OWI. But under IC 9-30-6-8, a judge can instead order an ignition interlock device installed on the vehicle — then no administrative suspension is imposed at all and none appears on the driving record; the device typically blocks the start if breath alcohol exceeds 0.020. On conviction, the court imposes its own suspension: up to two years for a first offense. Indiana replaced the old hardship-license system with specialized driving privileges under IC 9-30-16: a court order letting a suspended driver drive for specific purposes — work, school, medical appointments, or childcare — with an SR-22 filing and a Restriction 5 designation. Where the offense caused serious bodily injury, the suspension must be at least one year.

Illustration of who gets EtG tested in Indiana: probationers, defendants on OWI bond, problem-solving court participants, parolees, parents in custody cases, and drivers seeking license reinstatement

Cutoffs used in Indiana programs

The most important point on this page: there is no statewide Indiana EtG cutoff. We checked Indiana statutes, court rules, Department of Correction policies, problem-solving court standards, and BMV rules; none names an EtG threshold. Thresholds are set program by program and by the lab, mostly unpublished — your paperwork names the only cutoff that counts.

National context:

  • 100 ng/mL — the sensitive level many labs use; catches lighter, more distant drinking.
  • 500 ng/mL — SAMHSA's 2012 conservative recommendation.
  • Labs screen anywhere from 100 to 1,000 ng/mL, depending on the program's goals.

Do not assume an Indiana program uses either number unless its paperwork says so. And do not confuse the numbers that do appear in Indiana law — 0.08% and 0.15% BAC — with EtG cutoffs: those are breath-alcohol thresholds, not urine concentrations.

Graphic showing there is no statewide Indiana EtG cutoff, with 100 and 500 ng/mL shown only as national screening context, distinct from the 0.08 and 0.15 BAC tiers

Detection windows in Indiana programs

Detection windows are ranges, never predictions:

  • Heavy drinking: up to about 80 hours after the last drink.
  • A single drink: roughly 1–2 days at a 500 ng/mL cutoff; lower cutoffs extend the window.
  • Moderate drinking: between those anchors.

The biggest lever is the cutoff: at 100 ng/mL, the same episode stays detectable longer. One caution: an NIH-funded study found EtG detection sensitivity poor after 48 hours at every dose and cutoff it tested. Treat any window as a range with wide individual variation, not a countdown.

Apply these ranges with our homepage calculator or our detection timeline tool.

Timeline graphic showing EtG detection windows after drinking: single drink one to two days, heavy drinking up to about 80 hours, longer at lower cutoffs

A realistic Indiana scenario

Consider a participant in an Allen County drug court, in the early intensive phase: frequent random urine screens and a no-alcohol condition. He drinks heavily on a Friday night, then faces a random urine screen on Monday morning, about 60 hours later.

Sixty hours sits inside the published range for heavy drinking: at 500 ng/mL a heavy session can still be detectable, while a lighter one would likely have cleared; at 100 ng/mL, a positive is more likely. In a problem-solving court, a violation draws a graduated sanction — increased testing, added treatment, or short jail time — rather than automatic termination, but repeated violations can end the program.

No pass-or-fail claim is possible from a timeline alone.

Scenario illustration: an Indiana drug court participant timeline from Friday night drinking to a Monday morning random urine screen inside the 80-hour detection window

A note on legal advice

This page is educational, describing how EtG testing works in Indiana probation, OWI cases, problem-solving courts, parole, and family court. It is not legal advice, and program rules change. If you are subject to testing, your program's requirements — and an attorney if a violation is alleged — are the authorities that matter.

Frequently asked questions

Is there one Indiana EtG cutoff?

No. No Indiana statute, court rule, Department of Correction policy, problem-solving court standard, or BMV rule we checked publishes a statewide EtG cutoff. Each court, program, and lab sets its own, mostly unpublished. Nationally the common levels are 100 and 500 ng/mL (SAMHSA, 2012); neither is an Indiana rule. Your program's paperwork names the only number that counts. And do not confuse the numbers that do appear in Indiana law — 0.08% and 0.15% BAC — with EtG cutoffs: those are breath-alcohol thresholds for OWI charges, not urine concentrations.

Does Indiana probation use EtG testing?

Yes. Under IC 35-38-2-2.3, a court may require a probationer to periodically undergo laboratory chemical tests, and the probationer pays for the test while the lab reports results directly to the probation officer. Many Indiana probation departments run testing through a daily color-code system: the probationer calls a designated line each day, and if their assigned color is announced, they report for a test the next day. Urine analysis is the most common method, and labs run a creatinine check, so an abnormally low creatinine level from drinking excessive water can mean a failed or rejected sample. A positive result is typically reported to the probation department within 72 hours. Under IC 35-38-2-3, a violation can lead the judge to modify conditions, extend probation by up to one year, or revoke it.

What is OWI, and how is it different from DUI?

Indiana does not use the term DUI: the offense is operating while intoxicated (OWI), under IC 9-30-5. The statute creates two BAC tiers: a BAC of 0.08% to under 0.15% is a Class C misdemeanor (up to 60 days in jail and a fine of up to $500), while a BAC of 0.15% or higher is a Class A misdemeanor (up to one year and a fine of up to $5,000). A separate provision criminalizes operating while intoxicated regardless of BAC, rising to a Class A misdemeanor if the driving endangered another person. A repeat OWI within seven years is a Level 6 felony (six months to two and a half years, up to $10,000), as is an OWI with a passenger under 18 when the BAC is 0.15% or higher or the driving endangered someone. Drivers under 21 face a lower threshold of 0.02%.

What are Indiana problem-solving courts, and how does testing work there?

Problem-solving courts are specialized courts for high-risk offenders, built around treatment, frequent testing, and close judicial supervision instead of jail alone. The first two were established in 1996 in Vigo County and the city of Gary; by December 2025 Indiana had nearly 160 problem-solving courts operating in 61 of its 92 counties, certified by the Indiana Supreme Court's Office of Court Services under IC 33-23-16. Types include adult drug courts, OVWI courts, family recovery courts, veterans courts, reentry courts, and mental health courts. Participants face regular drug testing, treatment, and frequent court reviews; progress eases the requirements, and violations tighten them. Funding pressure is real: in 2026 Marion County's reentry and drug court stopped accepting new applicants after the Indiana Department of Correction cut a roughly $600,000 grant supporting those courts.

Can an Indiana family court order EtG testing?

Yes, at the judge's discretion. Custody is decided on the child's best interests under IC 31-17-2-8, and the mental and physical health of all individuals involved is one of the factors the court must consider, so a parent's alcohol use that bears on parenting capacity or the child's safety can be weighed. The court may require a parent to submit to drug testing before exercising parenting time under IC 31-17-2-21.8, and under IC 31-17-4-1 it can order treatment or supervised visitation where parenting time would endanger the child's physical health or significantly impair emotional development. In child-welfare (CHINS) cases, the Department of Child Services refers for substance-use assessment and testing, obtaining consent or a court order. Indiana has no general standalone alcohol-testing statute for custody cases; testing follows a request and a reason.

How long after drinking can an EtG test detect alcohol in Indiana?

The biology does not change at the state line: up to about 80 hours after heavy drinking, roughly 1–2 days after a single drink at 500 ng/mL; lower cutoffs extend the window. These are research ranges, not predictions. One caution: an NIH-funded study found EtG detection sensitivity poor after 48 hours at every dose and cutoff it tested, and called marketing of EtG as an 80-hour test unsubstantiated — a reminder that the '80-hour test' label is a marketing shorthand, not a guarantee.

Evidence and limitations

This guide summarizes primary research, public-health guidance, and Indiana public records. Group-level findings cannot predict one person's result.

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