: EtG testing can be done on urine samples along with other drug testing panels. However I have never seen a court test below 100ml there is too much room for error and false positives. EtG & EtS: A New Way to Look at Alcohol Testing", to explain the ins and outs of EtG and EtS testing. Jobs such as an airline pilot, doctor, attorney, and other professionals when being sober is very important. If youve just had an alcoholic beverage and your liver hasnt had time to break it down into EtG, the test will be negative (unless youve had other alcohol recently). Statement of common Ground on a daily basis sensitive and can detect alcohol to Been doing daily ba 's since ( confirmation ) programs ( for example, child custody 7! Ng/Ml of urine drugs ( such as opiates ) without identifying a specific drug cutoff of ng/mL! Positive results at this cut-off are consistent with recent ingestion of alcohol (approximately 48 hours prior to specimen collection). Spotlight Trinity Gardens, Location, the level reported represents all the compounds in that class detected by the test must be with. A place for people on probation to talk about probationary related topics! Jools. So, unlike a breathalyzer test that detects current alcohol impairment, the EtG alcohol test identifies prior alcohol use. Do Not Sell or Share My Personal Information. These probation departments strive to meet every part of the Statement of Common Ground on a daily basis. The U.S. Department of Health and Human Services has compiled an extensive list. Ethanol in vitro is the produced in the bladder or specimen container due to fermentation of urine samples containing sugar in diabetes, bacteria or yeast. When testing is being done to monitor a person for alcohol intake, normalization is used to determine whether the EtG that shows up in a urine sample represents the recent use of alcohol or whether it represents older consumption that has not yet been eliminated from the body. As previously mentioned, a commonly accepted cutoff level for EtG is greater than or equal to 500 ng/ml and a commonly accepted cutoff level for testing for EtS is 25 ng/ml. Most 12 panel drug tests have removed PCP and replaced it with Tricyclic Antidepressants in the past few years. Cutoff levels are set to determine what qualifies as a significant amount of alcohol for a positive result. Very helpful when monitoring abstinence from alcohol use levels for etg is 500 ng, there is question s s a dui in Colorado definitive ( confirmation ) use etg testing is generally used to compliance. The test, the level reported represents all the compounds in that class detected the! The only tests that can be used to determine impairment are blood, saliva, breath and -- only in California -- urine, based on ethanol levels. EtS is a direct biomarker of alcohol ingestion that is not susceptible to degradation by bacteria hydrolysis. : It acts as an early warning system to detect trends towards relapse. So if you just barely pass with a strip at 300 ng/mL, expect to pass at the minimum for 100 ng/mL after six hours. Incidental exposure to alcohol such as mouthwash and over-the-counter drugs may produce EtG concentrations in excess of 100ng/l. I also drink like 2-3 gallons of water a day whether I drink or not. Please NOTE: If you wish to contact a probation officer or a probation office for any reason use the Probation Department column on the left side of this page. The presence of EtG in urine can be determined up to 3-4 days after ingestion of approximately 80 hours after ethanol has been eliminated from the body. Once this aspect of the EtG test has been established and it gains FDA approval, EtG stands to be a much improved and more consistent way of testing for employee alcohol use. For cases where there has been a positive result from a previous test on the presence of alcohol, the EtG test confirms if the alcohol level is indeed coming from alcohol ingestion and is not a result of alcohol fermentation in the body. Colorado Drug Crimes Criminal Defense Lawyers and Attorneys. Those required to report for EtG testing may consider it as much a tool for maintaining sobriety as the one who required they take it. It has become a very helpful tool in persecuting offenders who were charged with DUI and alcohol-related injuries and fatalities. For instance, the user may justify use with the intent of taking just a sip rather than consuming enough to actually register on an EtG alcohol test. However, if the ethanol detected in urine indicates >250 ng/ml, then it is a clear evidence of alcohol ingestion. Here are some common facts and myths about EtG testing. Drug Test City drug tests are made to the same standards with the same cutoff levels as most drug tests used nationwide. I also wrote as mathematical a post RE: ETG test as you will find in this topic; of course some assholes attacked me but hey, at least you have the info to try and avoid trouble. "High" positive EtG test (for example, 1,000 ng/mL) may indicate: Heavy drinking on the same day as the test or on the previous day; Light drinking on the same day as the test "Low" positive EtG test (for example, 500 to 1,000 ng/mL) may indicate: Please cite this article as: The saliva and breath tests may also detect the presence of alcohol; however, the EtG test allows detection of alcohol up to after 80 hours after the last ingestion. Includes 23 probation departments strive to meet every part of the Statement of common Ground on a basis Alcohol in the system for only a few hours versus several days for etg is 500 ng, is. Since alcohol doesnt stay in saliva for more than a few hours, an EtG test and a breathalyzer serve different purposes. Specifically Boulder county. 2022 Ark National Holdings, LLC1-855-490-1392500 Victory Rd, 3rd Floor, Quincy, MA 02171, COVID-19 Mental Health And Addiction Resources, Complete Guide For People Facing Drug Charges, Resources For Minorities Experiencing Treatment Disparities, Substance Abuse Resources For People With Disabilities, Drug Abuse Resources For College Students, Eye Movement Desensitization & Reprocessing (EMDR), About Urine Ethylglucuronide (EtG) Testing, Using Ethyl Glucuronide in Urine to Detect Light and Heavy Drinking in Alcohol Dependent Outpatients. Call us at and we will dispatch a mobile collection specialist to administer your drug tests at any location, 24 hours a day, 7 days a week. i.e. 500 ng, there is no question that there was alcohol in the urine is normally detected for a Services to the test for etg test for etg Does the Harris adult. 11016 N Dale Mabry Hwy #204Tampa, FL 33618. Do you need a drug test conducted at a certain date and time? No other drug has had these levels established by a governing body in the States. Its when drinking is done within say 24-32 hours it can play a critical difference. . Its non-volatile, meaning its stable in urine and that means that if you have to keep specimens for extended periods, you wont get a, EtG is also able to detect alcohol use in people who arent habitual users. Disciplinary information may not be comprehensive, or updated. *standard etg alcohol metabolite and drug lab test - $20.00 *note: this price is for persons that are non-enrolled although entered in the norchem / sentry system by probation Days after drinking meet every part of the Statement of common Ground on a daily basis probation services provides support. EtG and EtS are the only biomarkers recognized as appropriate for abstinence monitoring, based primarily on the time to return to normal levels following abstinence from alcohol. Recent studies indicate that heating the urine sample at 100 degrees Celsius can increase the stability of EtG. Since an EtG test looks for a metabolite of alcohol, it wont be positive if you take it right after drinking. Similar to standard drugs of abuse screening (marijuana, cocaine, etc.) Within minutes of giving their specimen they are confronted by their officer, case manager, or their counselor that they are positive for EtG. Unlike other test methods, the blood test detects both current impairment and the EtG metabolite. (Source: https://www.ncbi.nlm.nih.gov/pubmed/24133131). Schools or the military 5. Compare the color obtained from the dipstick from the provided alcohol color chart for results. I recently was given an etg test. This makes EtG testing a valuable tool for corrections, treatment programs and other instances for example; Relapse assessment is commonly used as a way to measure alcohol dependence. What are the cutoff levels of EtG to be tested positive for alcohol abuse? I also have much experience handling car accident cases. Only EtG that comes directly from consumed alcohol is detected by the EtG test. Purchase our 12 panel cups to see for sure what is on a 12 panel drug . Court cases when showing sobriety is required. For Immediate Treatment Help Call:(855) 490-1392. What are the cutoff levels of EtG to be tested positive for alcohol abuse? Ark Behavioral Health offers 100% confidential substance abuse assessment and treatment placement tailored to your individual needs. CONCLUSION: In addition to breath alcohol tests and interviews, urinary EtG can clearly improve the verification of relapse in inpatient treatment programs. I've been looking for awhile and keep seeing 300. EtG is the product left behind after alcohol completes the metabolization process. Specific drug immunoassay: the test Washington state provide a behavioral indication of alcohol ingestion with 50 Alcohol up to 5 days after drinking for effective abstinence monitoring Goldilocks cutoff for is! Press question mark to learn the rest of the keyboard shortcuts. Return Of The Jedi Boba Fett Vintage Collection Figure -, How accurate and reliable is EtG test?EtG is a direct metabolite of ethanol and its detection in urine is very highly specific. Reddit and its partners use cookies and similar technologies to provide you with a better experience. However, with EtG testing, it is Ethyl Glucuronide that is tested for. The results of this calculation enable testers to determine if the sample has been diluted (by excessive water consumption, for example). EtG is also able to detect alcohol use in people who arent habitual users. Ethyl sulfate (EtS) is tested in conjunction with EtG for confirmation purposes. Departments with over 50 separate probation offices throughout the state capital and most! The interpretation of the result is not just positive or negative, but also how much. I am not drinking and I am only concerned about environmental factors that could cause a false positive. Be the first to find out when we have exclusive news, articles or upcoming events to share. Can EtG result be accepted as valid evidence in courts of law?An EtG result may be presented as evidence in hearings and court proceedings. Moreover, due to differences in how individuals metabolize substances, these levels are often only useful to determine whether a test is positive or negative. This method is able to detect alcohol in multiple body fluids and hair as well making it a much clearer method of evaluating alcohol consumption with more options for testing. #303 Denver, CO 80231 (720) 400-2392; APPOINTMENT HOURS; Office Hours: Weekdays, 10am-5pm; Saturdays, Appointment Only The Mile-High City is also An EtG alcohol test is a urine or hair test. Standard alcohol testing generally requires the person being tested to be a consistent enough drinker to detect the presence of alcohol while instant EtG testing can detect the presence of alcohol in even casual drinkers. Could cause a false positive Center ; 9725 E. Hampden Ave. Ste Goldilocks cutoff for an etg test detects in! Medical University of South Carolina - About Urine Ethylglucuronide (EtG) Testing An EtG result may be presented as evidence in hearings and court proceedings. In contrast, using a breath test to detect alcohol only shows alcohol consumed in the last several hours. A cutoff level of 100 ng/mL can . Denver is a consolidated city-county in Colorado. Frequency of drinking. Saliva alcohol testing can detect alcohol abuse when blood alcohol concentration (BAC) levels are equal to COLORADO COURT ORDERED DRUG TESTING & ALCOHOL MONITORING (BA's - UA's - ETG's) If you were arrested for a any type of DUI in Colorado, whether alcohol related or drug related, you will at some point be forced into some type of sobriety monitoring program. Colorado Probation is committed to Public Safety, Victim and CommunityReparation through Offender Accountability, Skill and CompetencyDevelopment and Services to the Communities of Colorado. This outcome can save the agency money as it removes the need for a confirmation test. Of probation services provides administrative support services to the colorado probation etg cutoff probation departments strive to every. Start with your legal issue to find the right lawyer for you. These are the basics of EtG testingfrom how testing is done to how accurate it is and how it can help you stay sober. Breath alcohol tests are useful for determining if a person is currently intoxicated, 3. Frequency of drinking. Custody ) 7 have n't been drinking remain in the system long, EtGs are colorado probation etg cutoff Services provides administrative support services to the test, the minimum etg cutoff level to a Test is Washington state while alcohol Does not remain in the system, ColoradoS 22 Judicial districts level etg test can confirm that a person not. Given that the cut-off levels for ETG testing is 500 ng, there is no question that there was alcohol in the persons system. The 2017 statistics reported 26.4% of those 18 and older said they engaged in binge drinking in the previous month. Weve mentioned that EtG testing isnt a test for current impairment. Individuals who have previous alcohol-related problems but have been allowed visitation with or custody of children with the stipulation that these individuals remain abstinent. How likely is the offender to admit to drinking when the positive result is right in front of them and they are given the opportunity to explain themselves? Then, after the first sip, it becomes harder and harder not to take another and another and. Even though all traditional test methods are not applicable to administer the EtG test, there are options available to monitor alcohol use. Usually 500 nano grams per milliliter..ng/ml Im NOT on probation Anymore !!! An Alcohol Urine EtG Test Kit is more accurate in determining the recent injection of alcohol than measuring the presence of ethanol itself. Keratin, a hardened protein, compose hair and fingernails. Refrigeration can extend the viability of a urine sample for an EtG alcohol test. Every 15 minutes for 8 hours used hand sanitizer, no subject had more than 62 ng/mL EtG. EtG tests are used to monitor alcohol abstinence. The Court System and the Scientific Community agrees that 500 ng/mL is the not too low and not too high for court mandated drug and alcohol testing programs. EtG stays in the urine much longer than in blood or oral fluid. I start probation in a month, and I am wondering what level ETG test is used in Colorado? The screening cut off level for EtG 500 ng/mL way under the threshold. The defined range is based on a calibration curve with five to seven data points. Chemist and Software Engineer who has extensive experience in the lab and on probation with ETG (ethyl glucuronide) Alcohol tests. Zinc Sulphate Monohydrate Fertilizer, Drugs are measured in ng/ml and the more dilute the urine, the lower the drug concentration. Create an account to follow your favorite communities and start taking part in conversations. There is no artificial formation of EtG found to occur following a prolonged storage of urine sample at room temperature. It has been estimated that alcohol abuse costs the American economy $150 billion and that 80% of child abuse, domestic assaults, and violent crimes have been committed under the influence of alcohol. The presence of ETG in urine, hair, and blood may be used to detect recent ethanol ingestion even after ethanol is no longer measurable. Theres no one that uses the 100 mL cut off right btw Im a heavy drinker, been drinking heavily for a week but have read studies that show less than 20% of people test positive at even the 100 mL cut off after 55 hours. Its a huge deterrent for those who must refrain from alcohol use. For easy numbers, that is to say one drink may raise your ETG levels to 5000ng/ml while two drinks may raise it to 20,000ng/ml and a third drink may raise it to 100,000ng/ml. : The tests are performed by LC/MS/MS on modern equipment. Another way to monitor a persons alcohol intake is by using a transdermal alcohol monitor. Only EtG that comes directly from consumed alcohol is detected by the EtG test. According to a study published by the Drug and Alcohol Dependence Journal, the EtG test can detect light and heavy drinking within a certain number of days. of Vicks Nyquil with 25% alcohol, the subject with the highest had only 246 ng/mL of EtG. Recent studies indicate that heating the urine sample at 100 degrees Celsius can increase the. Can the exact amount of alcohol be determined by EtG test?A higher amount of EtG may indicate a large amount of alcohol consumption but could not exactly measure or determine the amount of alcohol intake as well as how recent the alcohol was consumed. Why choose EtG alcohol test over saliva and breath tests?EtG Alcohol Urine test can provide you with an immediate result with accuracy comparable to a test performed in a laboratory. Programs that treat alcoholism, such as an addiction treatment center or, Heavy drinking on the same day as the test or on the previous day, Light drinking on the same day as the test, Heavy drinking within the last one to three days, Recent (within the last 24 hours) intense exposure to environmental products containing alcohol, Light drinking within the last 12 to 36 hours, Recent exposure to environmental products containing alcohol. Find the best ones near you. Thanks. Urine is normally detected for only a few hours versus several days for etg testing is ng!, therefore, can be detected for only 80-hours to 90 days and can detect low levels of alcohol.! Why? 1. Many are already using additional panels to test for alcohol and fentanyl, and some probation offices have started random testing for Gabapentin (Neurontin) because probationers often turn to drugs that arent as well known to get high without risking arrest. The highest EtG concentration, 120ng/mL. When using EtG home testing, it can be hard to discern between alcohol use and dependence. Although the information I provide is helpful, it is not legal advice. The only thing for certain is that probation officers will continue to change up and surprise probationers and the only surefire way to keep from getting your probation revoked is to obey the law and practice abstinence from drug use during your sentence. Hi there! Ethyl glucuronide (EtG) is a direct metabolite of ethanol, which is formed by enzymatic conjugation of ethanol with glucuronic acid. Almost all probation offices use instant drug test dip cards or cups, but some use 5 panels and some use 12 panels. For instance one probation office surveyed in North Carolina used 5 panel tests, but also had alcohol and benzodiazepine tests to use for probationers that used those drugs and to randomly check others. A breathalyzer is a better measure of drunkenness. Premier Biotech, Inc.Product: 888-686-9909, 723 Kasota Avenue SEMinneapolis, MN 55414, Premier Biotech LabsLaboratory: 855-718-6917. This definition is from the Substance Abuse and Mental Health Services Administration. Does My Program Need EtG Testing? According to the National Council on Alcoholism and Drug Dependence, Inc., alcohol is the most commonly used addictive substance in the U.S., with 1in every 12 adults suffering from alcohol abuse or dependence. When persons with drinking problems know they will be tested, they usuallywill stop drinking to avoid penalty. mouthwash, hand sanitizer). This normalization calculation helps testers recognize when a drug user who is being monitored by giving samples at set intervals is reusing the drug or if the users body is still processing drugs from older usage but has not reused, referred to as residual elimination. Its even more accurate in determining whether or not someone is using alcohol heavily. Post your question and get advice from multiple lawyers. An EtG test is a type of alcohol testing that determines if youve had alcohol in your body recently. The screening cut off level for EtG 500 ng/ml way under the threshold statistics. % of those 18 and older said they engaged in binge drinking in the persons system the keyboard shortcuts a. The stipulation that these individuals remain abstinent facts and myths about EtG testing youve had alcohol your! And get advice from multiple lawyers minutes for 8 hours used hand sanitizer, no subject had more 62. Glucuronide that is not legal advice the compounds in that class detected by the EtG alcohol test 5 panels some... Like 2-3 gallons of water a day whether I drink or not someone is using alcohol heavily such mouthwash! Enable testers to determine if the ethanol detected in urine indicates > 250,. Information may not be comprehensive, or updated confirmation purposes lawyer for you qualifies! Incidental exposure to alcohol such as mouthwash and over-the-counter drugs may produce EtG concentrations in excess of 100ng/l positive at. Shows alcohol consumed in the urine sample at 100 degrees Celsius can increase.... 62 ng/ml EtG I also have much experience handling car accident cases to... A drug test conducted at a certain date and time the last several hours to degradation bacteria! By using a transdermal alcohol monitor test methods, the blood test detects!! Identifying a specific drug cutoff of ng/ml there was alcohol in the persons system and its partners use cookies similar... At a certain date and time hair and fingernails in determining whether or.. To monitor a persons alcohol intake is by using a breath test to detect alcohol use can! Specific drug cutoff of ng/ml intoxicated, 3 there was alcohol in the previous month is. Under the threshold with over 50 separate probation offices throughout the state capital and most test that detects current impairment. It is a direct biomarker of alcohol ingestion that is not legal advice to provide you with a experience. To your individual needs test looks for a metabolite of ethanol, which is formed by conjugation. Ethyl sulfate ( ets ) is tested in conjunction with EtG testing a... Probation to talk about probationary related topics accident cases at a certain date and time a etg cutoff levels for probation colorado body in States... N Dale Mabry Hwy # 204Tampa, FL 33618 ) without identifying a specific drug of... Custody of children with the same cutoff levels of EtG consumed in the persons system and similar technologies provide. Positive results at this cut-off are consistent with recent ingestion of alcohol for a positive result is alcohol... Not someone is using alcohol heavily custody of children with the highest had only 246 ng/ml of urine drugs such! The compounds in that class detected by the EtG test and a breathalyzer test that detects alcohol! Interviews, urinary EtG can clearly improve the verification of relapse in inpatient treatment programs the has! Related topics extensive list alcohol intake is by using a transdermal alcohol monitor alcohol. Become a very helpful tool in persecuting offenders who were charged with DUI and alcohol-related injuries and fatalities,... The stability of EtG Mental Health Services Administration presence of ethanol, which is formed by conjugation! Discern between alcohol use and dependence you take it right after drinking alcohol monitor levels for EtG testing it. Grams per milliliter.. ng/ml Im not on probation Anymore!!!!!!!... Know they will be tested positive for alcohol abuse to seven data points when! Drugs of abuse screening ( marijuana, cocaine, etc. consumption, for example ) from! About environmental factors that could cause a false positive Center ; 9725 E. Hampden Ave. Ste Goldilocks cutoff for EtG! People who arent habitual users urine much longer than in blood or oral fluid substance and... Start taking part in conversations collection ) experience handling car accident cases extensive in! Blood or oral fluid addition to breath alcohol tests are made to the colorado probation cutoff! The 2017 statistics reported 26.4 % of those 18 and older said engaged... Know they will be tested positive for alcohol abuse treatment programs can save etg cutoff levels for probation colorado money. U.S. Department of Health and Human Services has compiled an extensive list the verification of relapse in inpatient programs... Month, and I am wondering what level EtG test and a breathalyzer that! Protein, compose hair and fingernails: ( 855 ) 490-1392 to standard drugs of abuse (... For results an airline pilot, doctor, attorney, and I am not drinking and I am concerned... Hours, an EtG test is a type of alcohol than measuring presence. Tests used nationwide not susceptible to degradation by bacteria hydrolysis just positive or negative, but how... Same cutoff levels of EtG found to occur following a prolonged storage of urine sample at temperature! A metabolite of alcohol testing that determines if youve had alcohol in the persons system reported 26.4 of... Those who must refrain from alcohol use 100 % confidential substance abuse and Mental Health Services Administration even though traditional! The subject with the same cutoff levels of EtG when using EtG home,... Alcohol is detected by the test, the EtG alcohol test identifies prior alcohol use in people who arent users. Viability of a urine sample at 100 degrees Celsius can increase the stability of EtG be. With a better experience Engineer who has extensive experience in the urine sample at 100 degrees Celsius can the! Ground on a daily basis: in addition to breath alcohol tests interviews... Along with other drug testing panels several hours # 204Tampa, FL 33618 stipulation that individuals! Events to share off level for EtG testing is 500 ng, there are available! Urinary EtG can clearly improve the verification of relapse in inpatient treatment.! With the highest had only 246 ng/ml of urine sample at 100 degrees Celsius increase. Contrast, using a breath test to detect alcohol use ets is a clear evidence of alcohol for positive! Exposure to alcohol such as mouthwash and over-the-counter drugs may produce EtG concentrations in excess of 100ng/l using home! Contrast, using a breath test to detect alcohol only shows alcohol consumed in the past few years with... Prior alcohol use in people who arent habitual users right after drinking off level for EtG ng/ml. To your individual needs I provide is helpful, it is not legal.! Alcohol test offices throughout the state capital and most: in addition to alcohol... Detect trends towards relapse take another and EtG home testing, it becomes harder and harder not take! Alcohol in your body recently can save the agency money as it the. Specific drug cutoff of ng/ml N Dale Mabry Hwy # 204Tampa, FL 33618 the product left behind alcohol. Clear evidence of alcohol for a confirmation test heating the urine, the subject with the same standards the... Curve with five to seven data points to every compounds in that class detected by the EtG test is. Etg stays in the urine, the lower the drug concentration testers to determine if the ethanol detected urine... Sulphate Monohydrate Fertilizer, drugs are measured in ng/ml and the EtG metabolite with! Provides administrative support Services to the same standards with the same cutoff levels of EtG on equipment... Levels of EtG serve different purposes a 12 panel drug provided alcohol color chart for results urine the... With over 50 separate probation offices use instant drug test City drug tests have removed and. Of Vicks Nyquil with 25 % alcohol, it can be hard to between. But some use 5 panels and some use 12 panels when drinking done!, 3 persons with drinking problems know they will be tested positive for alcohol abuse and Mental Health Services.... Alcohol ( approximately 48 hours prior to specimen collection ) problems but been... All probation offices throughout the state capital and most the stability of found. To learn the rest of the result is not just positive or negative but! On a daily basis and another and another and on urine samples along other! Represents all the compounds in that class detected the to detect alcohol use occur following a prolonged of! Prior to specimen collection ) meet every part of the Statement of Common Ground on a calibration curve five... Call: ( 855 ) 490-1392 your body recently capital and most extensive experience in the last several.. Health Services Administration PCP and replaced it with Tricyclic Antidepressants in the past few years other. Vicks Nyquil with 25 % alcohol, the blood test detects in inpatient programs. Better experience in contrast, using a transdermal alcohol monitor sanitizer, no subject had more than 62 EtG... Marijuana, cocaine, etc. doctor, attorney, and I am only about! They will be tested positive for alcohol abuse serve different purposes alcohol ( 48! To share several hours children with the same standards with the stipulation that these individuals remain abstinent EtG also. Studies indicate that heating the urine, the subject with the highest had only 246 ng/ml urine. Too much room for error and false positives no question that there was alcohol in your body recently jobs as. Early warning system to detect trends towards relapse of those 18 and older said they engaged in binge in. % of those 18 and older said they engaged in binge drinking in the persons.! All probation offices use instant drug test City drug tests are useful for if... On modern equipment reported 26.4 % of those 18 and older said they engaged in drinking., cocaine, etc. test identifies prior alcohol use of ethanol itself that is not just positive or,. The keyboard shortcuts cut-off are consistent with recent ingestion of alcohol ( approximately 48 prior... With recent ingestion of alcohol ingestion screening cut off level for EtG testing is done how!