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Geisinger Medical Laboratories Test Catalog
TRAZODONE, SERUM |
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ORDERING INFORMATION: |
Geisinger Epic Procedure Code: LAB3190 Geisinger Epic ID: 32309 | |
SPECIMEN COLLECTION |
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Specimen type: |
Serum or plasma. | |
Preferred collection container: |
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Specimen required: |
1 mL aliquot of serum or plasma; minimum 0.5 mL. | |
Special notes: |
Do not use serum separator tube. | |
| SPECIMEN PROCESSING |
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Specimen processing instructions: |
Allow serum to clot. Centrifuge serum or plasma 10 minutes at 3000 rpm. | |
Transport temperature: |
Room temperature. | |
Specimen stability: |
Room temperature: 7 days. Refrigerated: 14 days. Frozen: 60 days(-20°C). | |
Rejection criteria: |
The use of serum separator tube (SST) is not acceptable. Submission of an SST will result in cancellation. | |
TEST DETAILS |
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CPT code(s): |
80299 | |
| Note: The billing party has sole responsibility for CPT coding. Any questions regarding coding should be directed to the payer being billed. The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only. | ||
Test includes: |
Trazodone. | |
Methodology: |
Chromatography/Mass Spectrometry |
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Synonyms: |
Desyrel Quest test code 4732 TRAZB
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Clinical significance: |
For therapeutic drug monitoring of antidepressant therapy. Peak plasma levels occur approximately 1 hour after dosing when Trazodone is taken on an empty stomach or 2 hours after dosing when taken with food. Elimination of Trazodone is biphasic, consisting of an initial phase (half-life 3-6 hours) followed by a slower phase (half-life 5-9 hours). | |