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Ethyl Glucuronide (Etg) Homogeneous Enzyme Immunoassay (HEIA™)

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Ethyl Glucuronide (Etg) Homogeneous Enzyme Immunoassay (HEIA™) Ethyl Glucuronide (EtG) Homogeneous Enzyme Immunoassay (HEIA™) Improved Formulation using Fab Technology Formula: C8H14O7 Dual cutoff at 500 ng/mL or 1000 ng/mL Systematic Name: (2S,3S,4S,5R,6S)-6-ethoxy-3,4,5-trihydroxyoxane-2- carboxylic acid Fewer unconfirmed positives Fewer flagged samples About Ethyl Glucuronide (EtG): EtG is a minor non-oxidative metabolite of ethyl alcohol which is formed in the body by glucuronidation following exposure to ethanol, such as by drinking alcoholic beverages. Outperforms the competition It may be used as a biomarker to test for ethanol use in monitoring programs and is advantageous because it detects recent ingestion for a longer period of time than standard alcohol tests. Elimination: EtG is formed by in-vivo conjugation of ethanol with glucuronic acid in the presence of endoplasmic reticulum UDP glucuronosyl transferase.1 Only 0.02-0.04 percent of the alcohol is metabolized by this pathway. EtG can be detected in urine for up to three to five days following consumption of alcohol.2 1. Tukey, R.H. et al. Human UDP-Glucuronosyl Transferases: Metabolism, Expression and Disease. Annual Review of Pharmacology and Toxicology. 40: 581-616 (2000). Tel 909.482.0840 | Toll Free 888.664.8378 | Fax 909.482.0850 2. Skipper, G.E. et al. Ethyl Glucuronide: A New Marker to Detect 13485:2003 Alcohol Use in Recovering Physicians. Journal of Medical ISO www.immunalysis.com Licensure and Discipline. 90(2): 14-17 (2004). CERTIFIED Ethyl Glucuronide (EtG) (HEIA™) Assay Specifications Cross-Reactivity Methodology: Homogeneous Enzyme Immunoassay Analyte Analyte Ethyl Glucuronide Cross- Concentration Equivalent Reactivity Cutoff: 500 ng/mL or 1000 ng/mL (ng/mL) (ng/mL) (%) Mode: Qualitative 500 500 100 Ethyl Glucuronide 1000 1000 100 Overlap: EtG (500 ng/mL Cutoff) Propyl-β-D- 100,000 500 0.5 0.25 Glucuronide 220,000 1000 0.5 100,000 500 ND 0.2 Norbuprenorphine Glucuronide 100,000 1000 ND 0.15 Oxazepam 100,000 500 ND Glucuronide 100,000 1000 ND 0.1 Structurally related compounds and volatiles were tested using both Nominal Distribution % 0.05 500 ng/mL and 1000 ng/mL cutoff calibrator. The following analytes were tested for cross reactivity at 1,000,000 ng/mL concentration and none 0 were detected: Acetaldehyde, Butanol, Ethanol, Ethylene Glycol, Glucuronic Acid, Isopropanol, Methanol, Morphine 3β-Glucuronide and Morphine 6β-Glucuronide. Overlap: EtG (1000 ng/mL Cutoff) 0.25 LC-MS Confirmation (500 ng/mL) 0.2 Positive Negative 0.15 HEIA Positive 24 1 (500 ng/mL) 0.1 Negative 3 37 Nominal Distribution % 0.05 Qualitative Precision 0 500 ng/mL Cutoff Interday Precision (n = 80) Concentration Rate SD CV% (ng/mL) (∆mA/min) ORDER - EtG (HEIA) 375 Control LOW 544.0 6.3 1.2 Catalog # Description 500 Calibrator 558.8 6.6 1.2 341-0025 / -0100 / -0500 25 mL / 100 mL / 500 mL Kit 625 Control HIGH 572.7 5.7 1.0 C341-10-1-500 500 ng/mL Calibrator 1000 ng/mL Cutoff Interday Precision (n = 80) C341-10-2-500 375 ng/mL and 625 ng/mL Controls C341-10-1-1000 1000 ng/mL Calibrator 750 Control LOW 602.8 6.7 1.1 C341-10-2-1000 750 ng/mL and 1250 ng/mL Controls 1000 Calibrator 618.9 7.2 1.2 Neg-10-1 10 mL Negative Urine Control 1250 Control HIGH 636.7 4.9 0.8 ©2014 Immunalysis Corporation. All rights reserved. Immunalysis, Immunalysis Logo For Forensic Use Only and HEIA are trademarks of Immunalysis Corporation. MKT-1004 REV. C.
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