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Amphetamine Screen, Urine
| Item | Value |
|---|---|
| Approval req'd? | No |
| Available Stat? | Yes |
| Test code | AMPU |
| Test group | Amphetamine |
| Performed by | Parnassus Chemistry |
| In House Availability | Test available 24 hours per day 7 days per week |
| Method | Competitive enzyme immunoassay method (Beckman UniCel DxC 800 analyzer) using G6PDH-labeling |
| Container type | Urine cup |
| Amount to Collect | See preferred volume |
| Sample type | Random urine |
| Preferred volume | 1 mL urine |
| Min. Volume | 0.5 mL urine |
| Normal range | Negative Note: a negative result indicates that this class of drugs is not present, or they are present at a concentration below the cut-off concentration of 1000 µg/L |
| Stability | Refrigerated 1 week, frozen at -20C 2 weeks |
| Turn around times | STAT 2 hours, Routine 4 hours |
| Additional information | A concentration of < 1000 µg/L is considered negative by this test. A positive result is ≥ 1000 µg/L and indicates the presence of this class of drugs. This immunoassay is only a screening test and is not definitive. Results cannot be used for medico-legal purposes. This assay detects amphetamine and methamphetamine and has some cross reactivity with MDA (methylenedioxyamphetamine) and MDMA (methylenedioxymethamphetamine; ecstasy). Click here for List of Cross Reactive Substances False positive results may occur due to other cross reacting substances, however, positive results are NOT routinely confirmed by a second method. If confirmation of the test result is required, it is the responsibility of the physician to separately order a specific confirmatory test for the drug identified. Contact laboratory at x 31667 to request confirmatory testing. Confirmation test code AMPC. Samples are held for 7 days. False negative results are also possible, for example, with use of newer designer amine compounds. Amphetamine can be detected in urine from 24 hours up to 9 days after use. Methamphetamine can typically be detected 1.5-6 days after use. (From: Verstraete AG. Detection Times of Drugs of Abuse in Blood, Urine and Oral Fluid. Ther Drug Monit, 26(2) April 2004, 200-205). |
| LOINC code | 19343-3 |
| Last Updated | 3/24/2013 7:36:57 PM |
| Entry Number | 54 |
| Lab Procedure Link | Click here for Procedure |
If you have additional questions regarding this test, please call: 415-353-1667