| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
METHADONE, RANDOM URINE
Test CodeLAB304135
CPT Codes
80301
Preferred Specimen
Urine, random specimen in a cleanplastic collection cup
Minimum Volume
1 mL urine
Transport Temperature
Refrigerated
Specimen Stability
Ambient: 24 hours Refrigerated: 5 days
Methodology
Enzyme Immunassay (EIA)
Setup Schedule
Sunday-Saturday
Clinical Significance
Cutoff for positive value: 300 ng/mL
Approximate Detection Time in Urine: 1-3 days
Calibrator: Methadone
Other Drugs that may cause a positive result (suggest confirmatory testing if clinically indicated): Doxylamine (Unisom Nighttime Sleep Aid), Mefenamic Acid (Non-opiod Analgesic), Nyquil Nighttime Cold Medicine
Lowest Drug Concentrations Producing a POSITIVE RESULT
Concentrations of the following drugs produce a NEGATIVE REULT on this test
Approximate Detection Time in Urine: 1-3 days
Calibrator: Methadone
Other Drugs that may cause a positive result (suggest confirmatory testing if clinically indicated): Doxylamine (Unisom Nighttime Sleep Aid), Mefenamic Acid (Non-opiod Analgesic), Nyquil Nighttime Cold Medicine
Lowest Drug Concentrations Producing a POSITIVE RESULT
| Compound | Concentration Tested (ng/mL) |
| Methadone | 300 |
| Methadol | 750 |
Concentrations of the following drugs produce a NEGATIVE REULT on this test
| Compound | Concentration Tested (ng/mL) |
| 1-α-Acetylmethadol(LAAM) | 5,000 |
| Acetaminophen | 1,000,000 |
| Acetylsalicylic acid | 1,000,000 |
| Amitriptyline | 50,000 |
| Amphetamine | 1,000,000 |
| Benzoylecgonine | 400,000 |
| Caffeine | 100,000 |
| Carbamazepine | 20,000 |
| Cocaine | 200,000 |
| Codeine | 500,000 |
| Dextromethorphan | 250,000 |
| Diphenhydramine | 1,000,000 |
| Ephedrine | 1,000,000 |
| Imipramine | 50,000 |
| Meperidine | 150,000 |
| Methadone metabolite (EDDP) | 10,000, |
| Methadone metabolite (EMDP) | 10,000 |
| Morphine | 200,000 |
| Nortriptyline | 50,000 |
| Orphenadrine | 1,000,000 |
| Oxazepam | 500,000 |
| Phencyclidine | 500,000 |
| Phenobarbital | 1,000,000 |
| Phenytoin | 40,000 |
| Primidone | 24,000 |
| Promethazine | 100,000 |
| Propoxyphene | 250,000 |
| Secobarbital | 1,000,000 |
| Theophylline | 50,000 |
| Valproic acid | 150,000 |
| Verapamil | 1,000,000 |
Performing Laboratory
West Virginia University Hospital, Inc.
St. Joseph’s Hospital United Hospital Center
