Methadone Quantitation, Urine
Test Mnemonic
UQMET
CPT Codes
- 80358/G0480 - QTY (1)
Includes
- Methadone
- EDDP
- Specimen Validity Creatinine
- Specimen Validity pH
- Specimen Validity Specific Gravity
- Specimen Validity Oxidants
- Specimen Validity Nitrites
Performing Laboratory
Cleveland Clinic Laboratories
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 5 mL | Urine, random | Urine | Refrigerated | No preservatives |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | No preservatives |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | 3 days |
| Refrigerated | 7 days |
| Frozen | 7 days |
Days Performed
6 days per week
Turnaround Time
2 - 4 days
Methodology
| Name | Description |
|---|---|
| Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) |
Reference Range
| Specimen Validity Creatinine, Urine | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Years | Years | Normal | 20.0-300.0 | mg/dL | |
| Specimen Validity Nitrite, Urine | |||||
| Sex | Age From | Age To | Type | Range | Range Unit |
| Normal | <500 | mg/L | |||
| Specimen Validity Oxident, Urine | |||||
| Sex | Age From | Age To | Type | Range | Range Unit |
| Normal | <200 | mg/L | |||
| Specimen Validity pH, Urine | |||||
| Sex | Age From | Age To | Type | Range | Range Unit |
| Normal | 4.5 - 8.0 | ||||
| Specimen Validity Specific Gravity, Urine | |||||
| Sex | Age From | Age To | Type | Range | Range Unit |
| Normal | 1.003 - 1.035 |
Special Info
For medical purposes only; not valid for forensic use.
Clinical Info
For specimen validity interpretations, the following rules are applied: Diluted: Creatinine is greater than or equal to 2mg/dL but less than 20mg/dL and Specific Gravity is less than 1.003. Substituted: Creatinine is less than 2mg/dL and the Specific gravity is less than 1.003 or greater than or equal to 1.020. Adulterated: pH is less than 4 or greater than or equal to 11; Nitrite is greater than or equal to 500mg/L; Oxidant is greater than or equal to 200mg/L.