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Doxepin
| Item | Value |
|---|---|
| Approval req'd? | No |
| Available Stat? | No |
| Test code | DOX |
| Test group | Doxepin |
| Performed by | Quest |
| Sendout? | Yes |
| Method | Liquid Chromatography Tandem Mass Spectrometry |
| Collection Instructions | Do not use Gold top. Optimum time to collect is 10-14 hours after oral dose. |
| Container type | Red top |
| Amount to Collect | 6 mL blood |
| Sample type | Serum |
| Preferred volume | 3 mL serum |
| Min. Volume | 1.5 mL serum |
| UCSF Rejection Criteria | Collected in Gold top, hemolysis. |
| Processing notes | Refrigerate. |
| Units | µg/L (mcg/L) |
| Normal range | Therapeutic: 150-250 µg/L for SUM of Doxepin and Nordeoxepin |
| Critical value | Quest Priority-1: Doxepin + Nordoxepin ≥ 600 µg/L |
| Synonyms | Adapin; Sinequan |
| Stability | Room temperature 5 days, refrigerated 1 week, frozen at -20C 1 month |
| Turn around times | Test run 3x per week. Turnaround time 3-5 days |
| Additional information | Assay measures both parent and nordoxepin metabolite. Potentially toxic: > 500 for the SUM of the two compounds. See also Drug Screening. |
| CPT coding | 80166-90 |
| LOINC code | 3579-0 |
| Last Updated | 7/31/2012 12:52:33 PM |
| Entry Number | 321 |
If you have additional questions regarding this test, please call: 415-353-1667